Acts of Stupidity by Character

Much of the deaths that occur in Happy Tree Friends are a result of the main characters doing something ignorant, unwise, or downright stupid. Almost every character is prone to committing these actions, causing the deaths of themselves and/or others around them.

Cuddles
Cuddles is known for being mischievous and self-centered, which is often the root cause for his actions.
 * Water You Wading For: Cuddles jumps into a lake despite that swimming is forbidden, which Flaky points to. Because of this, Cuddles is attacked by creatures in the lake and crushed by a whale.
 * Sweet Ride: He doesn't look where he's skating at the end, causing him to crash into a staircase.
 * Let It Slide: Oblivious that a water valve was turned off, Cuddles pushes Flaky down a dry slide, skinning her and loosening a bolt in the slide.
 * Can't Stop Coffin: He climbs over a fence without seeing what's on the other side (in this case, a deep hole where he gets trapped in a coffin, burnt, drowned, and subsequently killed).
 * Remains to be Seen: Along with many other characters, he walks in front of Flippy's jeep not seeing what happened coming.
 * Change of Heart: He plays soccer with Handy's heart.
 * Dunce Upon a Time: Visibly and audibly moves in his hiding spot giving away his location Giant Lumpy. In his defense, he needed to sneeze.
 * Aw Shucks!: He drives past a boom gate that, although malfunctioning, was clearly trying to go down, indicating that a train was coming.

Giggles
Like most characters, Giggles is blissful and unaware of hazards until the last minute.
 * Better Off Bread: Giggles skips through flowers until, not watching where he was going, she falls off a cliff.
 * Remains to be Seen: Along with many other characters, she walks in front of Flippy's jeep not seeing what happened coming.
 * Every Litter Bit Hurts: She puts a wooden hair brush in plastic recycling. Then she chains herself and Sniffles to a tree Lumpy was not heading for.
 * Something Fishy: After Russell's Piranha jumps in her cup of water, Giggles drinks it without looking inside first. Thus the piranha chews her to death.

Toothy
Toothy tends to act on impulse, in terms that he chooses not to think before doing things.


 * Nuttin' but the Tooth: While performing dentistry on Nutty, he reads a book on how to perform the operation the whole time instead of actually reading it before hand, he pierces a needle all the way through Nutty's cheeks so that none of the Novocain even entered him . Then he makes a hole through the back of Nutty's head using a power drill. After that, he tries to remove a loose tooth by tying a string to it, removing Nutty's lower jaw in the process.
 * Class Act: As he flees in terror, he tosses a lit candle near a stage curtain, creating a fire that burns down the school.
 * Ipso Fatso: He tries to bench a weight that's clearly too heavy for him to left safely.
 * Mime To Five: Rather than the recommended two spoonfuls, Toothy pours two whole barrels of gunpowder into a cannon. This leads to an explosion which kills Toothy and splits Cuddles in half.
 * Remains to be Seen: Along with many other characters, he walks in front of Flippy's jeep not seeing what happened coming.
 * Cold Hearted: He tosses a snowball at Giggles just as she was about to kiss Cro-Marmot. This leads to Giggles' eyeballs getting stuck to the ice, forcing her to pull them out.
 * Brake The Cycle: He rides his bike despite the fact a bolt is missing (which he clearly knew was missing), leading it to fall apart and gradually kill him.
 * Ski Kringle: Doesn't notice Lumpy coming towards him and Sniffles.
 * His Smoochie: He eats a rotten Easter egg with little thought, poisoning himself seconds later.

Lumpy
Lumpy is considered the least intelligent and dumbest character in the series and is responsible for the majority of these acts. While famous for getting others killed, his stupidity goes further to the point where he can be seen as retarded.
 * Spin Fun Knowin' Ya: Spins the merry-go-round so hard it causes Cuddles, Toothy, and Giggles to fly off. In his defense, they did keep telling him to spin faster.
 * Wheelin' and Dealin': Wears a snorkel and scuba mask in a cart race.
 * Treasure Those Idol Moments: Runs over Flaky in clear sight. This was caused by the Idol, though, so it doesn't count.
 * Dunce Upon a Time: Sticks a fork in a plugged in toaster 3 times. Though he was simply after Flaky and didn't seem effected much by the electrocution.
 * You're Bakin' Me Crazy: Brings Petunia a blood-covered cake and stupidly says "Merry Christmas!" at her birthday party.
 * Meat Me for Lunch: Doesn't care at all that Lifty & Shifty were killed, and used their remains to make meat for his butcher's shop. (debatable, as Lumpy not caring that the raccoons were killed and feeding them to his customers simply showed his vengeful side; However, he looks surprised when Petunia realizes she's eating someone).
 * It's a Snap: Falls for bear traps baited with cheese.
 * Snow What? That's What!: Lies shirtless on a hammock with a drink... in the winter. Although to be fair, he doesn't seem to be shivering or showing signs of hypothermia.
 * Happy Trails Pt. 1: Isn't paying attention to the road (even walking away from the wheel), causing a crash on a stranded island. To be fair, Petunia and Mime took his attention away from the road.
 * Class Act: Instructs Toothy to go on with his act despite the other play actors' injuries. Also casts Nutty in a play that has a character dressed as a candy cane.
 * Rink Hijinks: Wears skis at a rollerskating rink while wearing exposed boxer underpants.
 * The Way You Make Me Wheel: Shaves while driving, resulting in his death and Handy's death as well.
 * I Get a Trick Out of You: Unintentionally suffocates a bird by keeping it in his hat, saws Cuddles' in half due to a magic trick, and later uses up the blood which Cuddles needed to survive.
 * Icy You: Somehow gets his tongue stuck in hot dog rollers and keeps working with his tongue stuck.
 * Out on a Limb: Cuts off the leg which wasn't stuck under the tree instead of vice versa.
 * Remains to be Seen: Chooses a leaf blower over a chainsaw to kill the zombies. But since Lumpy successfully defeated Flippy with said leaf blower, it really isn't stupid at all. But, considering the situation and Lumpy's luck, the chainsaw would have been a better choice. Though also given Lumpy's luck, he would have likely cut off his own limbs with the chainsaw and even if he didn't, it would have taken much longer to defeat all of the zombies.
 * From A to Zoo: Puts in a dart the wrong direction, causing it to go down his throat and tranquilizes himself (he was doing this carelessly because he was in panic, however, not stupidly). He also doesn't notice a rhino's horn obviously went through Toothy's head, and mistakes a baboon for Sniffles (or just doesn't care).
 * The Wrong Side of the Tracks: Designs a roller coaster so poorly that it causes the deaths of the riders and himself. He also nails a wooden board to his ride with Mime impaled to it.
 * Don't Yank My Chain: Falls for Lifty & Shifty's foolish disguises and arrests Handy and Mole. Leaves the cell open with the keys near it. Takes several seconds to realize that Handy and Mole had gotten away. Uses part of Mole's sweater (a clue to finding them) to blow his nose.
 * Doggone It: Blows a whistle and causes puppies to attack him. Assuming that only that Whistle would go berserk, and not all of the look-alikes, is not particularly stupid. If only Whistle goes berserk, it would be a sensible way of distinguishing him from the others, as Lumpy felt he could handle one Whistle and really he had no reason to suspect that all of the dogs would go berserk.
 * Concrete Solution: Makes a bridge out of sugar instead of cement. To be fair, who would have expected a bag of sugar mixed in with a bag of cement, especially as their bags have the same color, shape and size? Probably more of carelessness than stupidity, and he did complete the bridge alone after Handy and Mole were killed, and would have been successful if not for Nutty). The real act of stupidity in this episode is looking inside the nail gun and firing it. He was lucky it wasn't plugged in.
 * Wishy Washy: He was walking in with his shoes dirty, Then exited and came back in only to realize that there is a mat underneath him, And when Petunia chokes on a glove, Lumpy puts his plunger into Petunia's mouth in order to help her.
 * Who's to Flame: Foolishly plays with a lit match, which is ironic considering his fireman job (Not particularly stupid, because he's playing it in such a way that won't cause disasters).
 * Every Litter Bit Hurts: Destroys an entire tree just to make one toothpick (Though this was just to show how much of an a-hole he is in this episode) and clogged his exhaust pipe with a pine cone.
 * As You Wish: He also sets Cub on fire and gets him run over by a firetruck. To be fair, it really depended on how Pop worded his wish, as Lumpy was able to successfully grant Nutty, Disco Bear and Sniffles' wishes.
 * Take a Hike: Dunks Sniffles in a river with sharp rocks, piercing his head repeatedly, though to be fair, he had no way of knowing what was under the water in that one spot. Uses up all the drinking water for shaving instead of that in the lake. Doesn't look after the group well enough. Takes a nearly broken bridge over a strong one (though this was out of fear, so he wasn't paying attention).
 * A Change of Heart: Lumpy repeatedly losing the normal sized hearts due to his not paying attention. However, he did successfully implant a whale heart on a bear with Disco Bear surviving, and knew that using a bicycle pump would keep Disco Bear alive, so even if it looks stupid, it was probably not.
 * Blast from the Past: Pushes his body so hard on a seesaw that the handle impales him. Laterrepeats his stupid acts that he did in "Spin Fun Knowin' Ya!".
 * Chew Said a Mouthful: Mistakes a jawbreaker for Toothy's eye and draws a pupil on it and puts it in Toothy's eye socket, also drawing a mustache on him.
 * Idol Curiosity: Mistakes ice in Toothy's drink for an iceberg. This was caused by the Idol, though, so it doesn't count.
 * Home Is Where the Hurt Is: Folds the blueprints of Giggles' new house into a origami crane. Later, he connects electrical pipes to normal pipes for the shower, which electrocutes Petunia later.
 * Aw Shucks!: Unintentionally destroyed his house while trying to kill a crow, and thought Toothy's corpse was his scare-crow. Although to be fair, Lumpy might have known it was Toothy, but simply did not care as long as he could serve as a scarecrow.
 * Wingin' It: Uses many electronics, despite Mime telling him not too. Later, he takes all five parachutes simply meant that he did not care for his fellow passengers, not particularly stupid. What is stupid is his failure to properly wear even one of these parachutes properly so in the end, it didn't save him.
 * Tongue in Cheek: Mistakes the skin from Sniffles' hand as his glove and his organs as a mini-golf course. Although he could have known it was Sniffles' hand and his organs, but he just didn't care as long as he had fun playing golf. Though, anyone who plays golf knows that you only wear one glove so he shouldn't have been looking for the other glove in the first place.
 * I've Got You Under My Skin: Tries to stop Sniffles from traveling further up his body, but ends up severing his leg. He is also shown to have numerous strange items, including a plane propeller and a bear trap, inside his pockets.
 * Junk in the Trunk: Takes forever to compare the elephant in Lifty & Shifty's car and the one he put on his missing elephant poster. He also chooses a pogo stick over a race car to chase after the thieves. Although to be fair, he was successful in chasing the twins with the pogo stick, so that was not particularly stupid also, if he had chosen the race car, he would have had to get far enough AHEAD of them, pull off, get out, and find a way into the speeding van on foot where the pogo stick allowed him to bounce straight into the van wasting no time.
 * Hear Today, Gone Tomorrow: Doesn't realize his can was on his butt and ran to get some new things. He later tries to use a trombone as a hearing aid, tries to phone the hospital while deaf, wears a birthday hat the wrong way (though it was likely simply a difficult task to get it around his antlers), and tries to phone for help using a can telephone.
 * Double Whammy Part 1 and 2: Hypnotizes himself, making him act like a chicken. This is later seen in part 2, where he is inside a chicken truck trying to lay eggs. Also, in Part 1, he shows Flippy ink blobs that even to a normal person look like: a dagger, a bomb, and an explosion causing him to flip out. (Though this could have been done as a way to test what causes the flip outs).
 * Can't Stop Coffin: Buries what was originally an empty coffin, fills the hole with water (though this could have been done to extinguish the fire), and leaves his truck in reverse driving it into the grave, crushing Cuddles.
 * All Flocked Up: Tries to pop his balloons with a rock, but accidentally throws it at Toothy, causing his face to land in hot tar (debatable, may simply be a wrong aim).
 * Something Fishy: Uses the fish bowl as the Helmet.
 * I Nub You: Sews Handy and Petunia together, and ends up sewing his own arms on them.
 * See You Later, Elevator: He uses an elevator during a fire, which isn't safe. Tries CPR on the lower half of Cuddles' corpse.
 * Milk Pong: Chokes on a ball, later drinks bleach instead of milk, doesn't notice a rat in the cup (twice), and tries to get the ball out of a wood chipper with his bare hands.
 * The Chokes on You: Eats donuts while working, and doesn't chew before swallowing.
 * Brake The Cycle: Spills too much gasoline while pouring it into his motorbike, which let him getting burnt to death.
 * All In Vein: Leaves Giggles in the fridge for too long, causing her blood to harden. He later drinks too much blood, causing him to go overweight.
 * No Time Like the Present: Brings Handy a pair of mittens, ironic considering his lack of hands.
 * You're Kraken Me Up: Instead of rescuing Russell, he saves the kraken tentacle with Giggles' head on it, thinking it was Giggles. He makes a similar mistake later on by feeding a bottle of milk to Cub's head attached to a tentacle.
 * All Work and No Play: Attempts to save Nutty by jack-hammering the top of the wall, resulting in his torso getting completely mangled. Later saves Sniffles, but is distracted by Lammy, resulting in him getting smashed to pieces by the excavator's buckets closing in on his head. (Lumpy ironically, knows Lammy is already impaled through the brain earlier in the episode, though it likely distracted him because he thought she was dead and is now walking on her own with an injury that should be impossible to survive).
 * A Vicious Cycle: Eats chips out of Disco Bear's brain. While hiding in from a possessed tricycle, he bites a chip and the crunch noise blows his cover.
 * Spare Tire: Pours too much gasoline into his motorcycle to the point of it leaking.
 * Dream Job: Messes with the television so much that Sniffles' dreams become erased and the TV turns off. Though to be fair, he likely had no idea that's what he was doing and didn't have many ways to. Really it's Sniffles' fault for making it possible for him to do this.


 * Ski Patrol: Messes up and causes the deaths of numerous characters. Though this could also have been the narrator's fault for misinterpreting the instructions, and the fact that the narrator continues to praise him even after such mishaps.
 * Kringle Tree: Smashes Giggles' head trying to chop down a tree with an axe.
 * Kringle Feast: Takes him a long time just to start up a lighter. Then he kills himself (and others) from an explosion because he left the gas open too long while trying to light a lighter. Although to be fair, having a hard time starting a lighter isn't by itself a sign of stupidity.
 * Kringle Frosty: Skis over Sniffles and Toothy, killing them. Although he might have missed them because he plowed through their snowman in the first place.
 * Strain Kringle: Throws a rock at Cuddles and Toothy, when a snowball would have been more preferable (Possibly he was being a jerk).
 * Seize the Day: Uses a defibrillator on Cuddles while he is having a seizure, resulting in his death.
 * Happy New Year: Crashes into Flaky and Russell, crushes Cuddles, and somehow gets the film wrapped around his body.
 * Moppin Up: Forgets to put a Wet Floor sign while mopping, causing Sniffles to break his head. To be fair, since he was currently in the process of mopping so the sign shouldn't have been necessary and considering that Sniffles didn't notice Lumpy mopping, he certainly wouldn't have noticed the sign.

Petunia
Petunia may occasionally pull off these mistakes, with at least one popular scenario of stupidity.
 * Remains to be Seen: Along with many other characters, he walks in front of Flippy's jeep not seeing what happened coming.
 * Wishy Washy: After getting increasingly dirty trying to get clean, Petunia resorts to skinning herself alive using a potato peeler. To be fair, though, she lost her stability from seeing Lumpy's corpse and because of her severe obsessive-compulsive disorder (OCD). Also, downs a whole bottle of mouthwash, an act that could have killed her.
 * Breaking Wind: Probably her most well-known blunder, she whips out a match in the middle of a gas cloud induced by Splendid. As a result, the earth is set aflame and kills presumably billions.

Handy
Like Petunia, Handy isn't as responsible for many of these actions.
 * Remains to be Seen: Along with many other characters, he walks in front of Flippy's jeep not seeing what happened coming.
 * Home Is Where the Hurt Is: Was it his idea to invite Lumpy to build Giggles' home?
 * Don't Yank My Chain: He trusts Mole to use a mallet to hit a chisel he held between his teeth. He also could have looked for someone working at the sawmill to remove his chains. Instead, he attempts to cut off the chains using a train.

Sniffles
Despite being considered by most as the most intelligent character in the series, Sniffles has caused many ignorant actions.
 * Treasure Those Idol Moments: Unlike Cub and Flaky, that had the idol land in their hands, or Lumpy who it just appeared close enough to him, Sniffles actually goes after The Cursed Idol after seeing what it did to Toothy.
 * Boo Do You Think You Are?: Before death, he makes no attempt to detach the hand from his head.
 * Tongue Twister Trouble: He gets his tongue stuck on the ice trying to catch the Brother Ant.
 * Spare Me: Attempts to toss a bowling ball using his snout, leading his head to be torn off.
 * Happy Trails Pt. 2: Jumping the Shark: He designs a rocket so strong it can go all the way to the sun and cannot be stopped from this course.
 * A Hard Act to Swallow: Takes a nap after eating one of The Ants.
 * Remains to be Seen: Along with many other characters, he walks in front of Flippy's jeep not seeing what happened coming.
 * Suck It Up: He makes his invention with a ridiculously flexible nozzle to where it can get stuck to the side of his head with the other side still attached to his face. He also doesn't try to remove it from is face at any point during the torture session.
 * His Smoochie: Since he apparently invented the growth serum, he should have known its effects and not have drank it. Rather he should have poured it on his body if he wanted to grow himself.
 * From A to Zoo: He stands right up against the baboon's cage and has Lumpy take a picture of him there using flash.
 * The Wrong Side of the Tracks: Throws away clearly important objects he found with his metal detector and stands way too close to a proven deadly rollercoaster.
 * From Hero to Eternity: He can't even beat an ADD from sugar overdose squirrel at a game of checkers and is about to declare a rematch in the middle of the game.
 * Party Animal: He spits an apple that was already in his mouth back into the barrel. Then he used that barrel as a hiding spot despite it being filled with water and there for preventing him from breathing.
 * Doggone It: He somehow lets a giant squid get in his house.
 * Ipso Fatso: He let's Toothy bench a weight that's clearly way too heavy for him to lift safely.
 * Who's to Flame?: He drives off in the engine with Cuddles still up on the lift. He also uses a plain ladder up to the window of a house that the fire's clearly too dangerous to do so.
 * Every Litter Bit Hurts: He just watches as The Mole stabs his foot with a litter pick not making any attempt to move his foot despite facing the right way unlike Giggles was. Also, blindly follows Giggles to chain himself to the wrong tree.
 * Take a Hike: He runs around randomly while on fire instead of either stopping, dropping, and rolling or heading for the lake.
 * A Hole Lotta Love: Let's the Mole make and man the map. He builds or doesn't stop someone from building the look out window of the drill where it can't go under ground without shattering.
 * Dunce Upon a Time: He visibly and audibly moves his hiding spot giving his location away to Giant Lumpy.
 * Blast from the Past: After dropping a glass of milk, Sniffles decides to build a time machine rather than cleaning the mess and replacing the glass. Doing so leads him to create various time anomalies. He also shouldn't have landed the plane right in front of Giggles.
 * Concrete Solution: Carrying Nutty in an ambulance, Sniffles forgets to strap down his patient's gurney. He finally attempts to do so while still driving his vehicle, causing a crash as well as his fate.
 * Mime to Five: He goes in water to deep to touch clearly for whatever reason being unable to swim.
 * See What Develops: Despite him clearly being the paper's photographer, he completely ignores the lack of pictures in the issue.
 * Idol Curiosity: He keeps carrying the idol with him despite seeing all the disaster it's causing. Later, he tries to stop an earthquake by barricading the door and throwing stuff in it.
 * In a Jam: He shoves cymbals in Handy's mouth when he was having a seizure leading to his death. With his medical experience, he should have known that he was supposed to take away his hammer and screwdriver so he doesn't get hurt from them, turn of the strobe lights, and wait it out.
 * Wingin' It: Being the only pilot operating a plane, it was rather unwise of him to encounter Lumpy personally. He could has simply spoken to Lumpy via speaker.
 * Tongue in Cheek: Even after being painfully tortured once, Sniffles' determination to eat the Ants consumes him and he tries to use a mind-control helmet and robot to do the job. The Ants once again get the upper hand and kill him in gruesome, agonizing ways. This happens in other episodes but here he doesn't have the show's lack of continuity as an excuse. Also, makes the helmet to control the helmet so that all the Brother Ant had to do was reverse to wires to give him complete control of Sniffles' body.
 * Easy Comb, Easy Go: He just stands there as Disco Bear sticks his head into the cotton candy machine.
 * I've Got You Under My Skin: He tries to rip Giggles off the mailbox when she's clearly frozen to it. Considering his intelligence, Sniffles could have helped Giggles using medical knowledge. He uses a shrinking submarine, which came with a timer indicating how long he'd stay microscopic (which he could have turned back to keep himself that size until the job was done). He flew right through Lumpy's optic nerve instead of around it. Also, when he climbs out of the machine, he steps on the timer shrinking it on himself. Lastly, he crawls for a first-aid kit for help, despite how incredibly severe his injury was.
 * Hear Today, Gone Tomorrow: He gives a deaf Lumpy a hearing horn that ONLY does any good when the sound is all the way up at the mouth on the horn and calls it good.
 * Double Whammy Part I: He shots a bow and arrow in front of Flippy.
 * We're Scrooged!: He was going to pay a ridiculous amount of money to buy one of Toothy's organs as a toy without paying attention to what he was really giving a small fortune for.
 * Wrath of Con: He keeps his ticket in his pocket when it's supposed to be around his neck and forgets it's there. He asks Splendid for an autograph while Splendid was busy holding up a chunk of debris. To be fair, this could also count as part of Splendid's accord.
 * Happy Tree Friends: False Alarm (episode): Either gives or lets Nutty take a chainsaw into his padded cell.
 * Peas in a Pod: He blantantly walks right into a Pod Lumpy and as the BlurB! points out, he would have walked into the wall if it wasn't there.
 * Something Fishy: He puts his hamster right next to Russell's piranha. He also doesn't even notice the fishbowls on Russell's head instead of the helmet.
 * See You Later, Elevator: He slowly strolls out of an out-of-control elevator instead of running.
 * Random Acts of Silence: Despite there not being an emergency, he and Nutty try to sneak out the fire exit, then, when the alarm goes off they don't even exit, but instead stand there and stare.
 * By the Seat of Your Pants: He sits right in front of Flippy in the audience for a swim race that uses a starting pistol.
 * All Work and No Play: Sniffles, along with Lammy and Nutty, decide to play on a playground that is clearly still under construction. In particular, Sniffles goes down a slide despite it having holes in it, causing his body to be grated like cheese and slides right into wet cement.
 * Pet Peeve: He pets the creature he created so he should have known it was corrosive. Then brings in out in public and lets it hump Lumpy's leg, despite knowing the danger. Finally, similar to Concrete Solution, Sniffles does something without stopping the car first. In this case, checking on his pet after it makes a hole through the floor. This sends the vehicle into a sidewalk where Sniffles gets his scalp sliced off.
 * Spare Tire: He tries to fix a long dead Giggles by replacing her missing middle with a tire. Note that though the heart rate monitor started, the air could have just pushed some her blood into artificial circulation.
 * Camp Pokeneyeout: He uses a machine slingshot to retaliate against a normal one the he wasn't even the one attacked with not even trying to aim shooting the rocks all over the place and causing almost all the deaths and injuries in the episode.
 * Dream Job: He had designed his dream machine where it was possible for someone else (case in point Lumpy) to change his dreams by simply flipping through channels with a TV remote.
 * Kringle Frosty: He doesn't notice Lumpy coming down the hill towards him and Toothy.
 * Moppin Up: With a big puddle visible on the floor (and Lumpy in the process of mopping it), Sniffles should have watched where he was going or walked more carefully.

Nutty
Nutty has done many things that endanger his and others' lives, mostly because of his candy addiction.
 * Class Act: The entire fiasco all started when Nutty bit a chunk off Sniffles' body, dressed in a candy cane costume.
 * Stealing the Spotlight: Seeing a string of Christmas lights as candy, Nutty swallows them and gets disembowelled by Lumpy as a result.
 * Concrete Solution: Hanging onto the edge of a bridge for dear life, Nutty begins eating it after realizing it is made of sugar. It comes to the point where he bites off one last bit of the bridge holding two halves together, leading him to be violently ripped in two.
 * Chew Said a Mouthful: Fractures his jaw trying to bite a jawbreaker, cuts his braces loose, and causes several deaths (including his own) in an attempt to get the confection back.
 * Wipe Out: After dropping his ice scream scoop into a tide pool, he mistakenly puts a sea urchin into his cone and bites it.
 * A Sucker for Love: Upon bashing a gumball machine open, Nutty places a handful of gumballs into his mouth, along with shards of glass. He gets his teeth and gums cut, followed by his face when he blows a gum bubble.
 * Random Acts of Silence: Despite there not being an emergency, he and Nutty try to sneak out the fire exit, then, when the alarm goes off they don't even exit, but instead stand there and stare.
 * All Work and No Play: Nutty, along with Lammy and Sniffles, decide to play on a playground that is clearly still under construction. In particular, Nutty rides on a swingset located dangerously close to a bunch of large nails, to which he soon gets impaled.

Pop
Almost earning a reputation similar to that of Lumpy, Pop's stupidity derives from his incompetent parenting, usually the result of Cub's deaths and injuries.
 * Snip Snip Hooray!: He accidentally cuts off one of Cub's ears with scissors. Then he leaves Cub unattended with a razor, paying no attention as Cub puts the item in his mouth as he activates it. He is oblivious to Cub's following death.
 * Water Way to Go: He buries Cub in sand from the neck down and abandons him to get ice cream. Cub gets submerged in high tide and Pop believes his son has been washed out to sea. He brings a boat on the water, running over Cub's head and ultimately shredding him to death with the motor.
 * And the Kitchen Sink: He sends Cub rolling down a hill in a wagon, goes through a garden of cacti instead of around it, leaves Cub unattended in the sink until his fur is burnt off, almost kills Cub by activating the garbage disposal, breaks one of Cub's bones, almost kills him again by using his car, and drowns him by once again leaving him unattended.
 * Every Litter Bit Hurts: He fails to notice Cub choking on litter and mistakes his remains for trash.
 * Read 'em and Weep: Cub is turned back to his normal self after The Demon that possessed him was removed by Lumpy. Unfortunately, out of fear, Pop flattens him using a shovel.
 * See You Later, Elevator: Pop tosses a lit match out a window, which gets blown into the lower floor and creates a fire.
 * Clause For Concern: In a post-credits scene, Pop crushes Cub by closing a door on him.
 * Bottled Up Inside: Stops in the middle of a crosswalk to pick up a coin, getting Cub and much of the stroller hit by Russell's car, to which he remains completely oblivious. He is also oblivious that his water container has Russell's corpse in it, and fills a cup with his blood.

Cub
Cub's stupidity is excusable, since he is very young and has little understanding with the concept of death.
 * Rink Hijinks: He rips Lumpy's heart out using a claw in a toy machine, then hugs the organ thinking it is a toy.
 * Cubtron Z: After being reincarnated into a giant robot, he uses Cuddles, Giggles and Petunia as crayons to draw on a building.

Disco Bear
Disco Bear's intelligence isn't likely very high. An early gag consisted of him accidentally killing girls and thinking their suffering was a type of dance move.
 * Stayin' Alive: Disco Bear tosses Giggles into scalding hot tea and Petunia into an electric fence, and obliviously dances to their movements of pain.
 * Aw Shucks!: He is completely unaware that Giggles has been hit by a chunk of popcorn, and believes that the popcorn is an afro. He then proceeds to kiss her before being killed himself.
 * Easy Comb, Easy Go: He sticks his head inside a cotton candy machine. He leaves the back of the van open so many bottles of hair growth formula fall out. He sticks his entire head in the formula insead of just pouring it on top. Finally, he cuts off his eyes with a straight razor.
 * Put Your Back Into It: After his spine bursts out of his body, Disco Bear tries to fix it using duct tape, as opposed to calling an ambulance.

Russell
Russell's intelligence doesn't seem to be that high. In fact, it could be comparable to Lumpy's at times.
 * Whose Line Is It Anyway?: He swallows a live pufferfish and it inflates in his throat.
 * Remains to be Seen: Along with many other characters, he walks in front of Flippy's jeep not seeing what happened coming.
 * In a Jam: Strums an electric guitar while a glass of water lays on top of an audio box. Knocking over the glass, Russell ends up being electrocuted to death.
 * Bottled Up Inside: After a glass bottle impales his chest, Russell pushes it further into his body just to fit into his car. He doesn't adjust his seat, preventing the driver's wheel from turning because of the bottle. Also instead of simply stopping his car and walking to the hospital he keeps driving forward.
 * You're Kraken Me Up: He is completely oblivious that Giggles' head was torn off and placed on a giant squid's tentacle.
 * Put Your Back Into It: Rips out Disco Bear's spine and head, thinks he's caught a fish, and cooks the remains for a dinner date. It also makes very little sense why he was casting his fishing rod at the beach instead of towards the ocean.

The Mole
Some may consider the Mole's actions acceptable since he is blind. But there are times this rule won't apply.
 * In a Jam: Despite Cuddles informing him about a mistake (giving a button instead of money), he makes Cuddles donate again. He doesn't find it weird that a chair was suddenly where his patient laid, and proceeded to sit on Cuddles' corpse.
 * Wipe Out: Shreds Lumpy to death and carves his body into a surfboard. While apparently unable to see, the Mole should have at least heard Lumpy's screams of pain.

Mime
Mime has caused quite a few of these, with one popular case.
 * Mime and Mime Again: He could have simply turned the fan off before Toothy got sliced apart and died.
 * Remains to be Seen: Along with many other characters, he walks in front of Flippy's jeep not seeing what happened coming.
 * Easy For You to Sleigh: Somehow doesn't notice Lifty and Shifty are watching him, despite the fact that they aren't even hiding.
 * Who's to Flame?: Assuming he could talk, why did he mimic talking on the telephone, instead of actually talking? And even if he can't, why use the phone in the first place?
 * Dunce Upon a Time: Stays in the broken jar even when about to be stepped on.
 * Mime To Five: Takes a job at a drive-thru window even though he can only mimic talking. His mime instincts once again get in the way, when he mimics trying to save an imaginary person drowning, and letting Sniffles drown.
 * Something Fishy: He also doesn't even notice the fishbowls on Russell's head instead of the helmet.

Flaky
In contrast to the blissfully ignorance of most characters, Flaky is known for being very cautious about her surroundings, thus she can be considered as one of the wiser characters. But even she has made mistakes.
 * Happy Trails Pt. 2: Jumping the Shark: She completely forgets that she's a porcupine and leans back against the inflatable life raft popping it.
 * Party Animal: She invites friends over to celebrate Flippy's birthday. Though to be fair, it is unclear whether any of them were aware of Flippy's condition at the time.
 * Take a Hike: She accidentally kills an eagle chick trying to return it to its nest, and gets killed by its mother as a result. Usually it is common sense to leave a baby bird alone considering how protective their parents are.
 * Dunce Upon a Time: She visibly and audibly moves in her hiding spot giving away her location to Giant Lumpy.
 * Wipe Out: Considering her fear of water, it is hard to imagine why she entered the surfing contest in the first place. Perhaps she wanted to try being brave.
 * Without A Hitch: Let's her hallucinations distract her from driving causing her to crash into a pole. More so induced by her cautious behaviour, she attacks Flippy after he tried to save her life.


 * The Chokes On You: Somehow doesn't notice that the "donut" she had got was Lumpy's flesh. Like Lumpy did earlier in this episode, she swallows a donut without chewing it first. She ends up choking and possibly dies.

Lifty
Despite being considered by most as pretty much the same character, Lifty seems to have more of the brains for the raccoon duo but he still make mistakes, usually along with Shifty though.
 * Wheelin' and Dealin': Doesn't notice until the race is about to start that the cart didn't have wheels or that it didn't have a steering wheel until one was needed despite having presumably made the cart with Shifty.
 * Meat Me for Lunch: He and Shifty keep a shoe in the fridge.
 * Remains to be Seen: Along with many other characters, he walks in front of Flippy's jeep not seeing what happened coming.
 * Easy For You to Sleigh: He and Shifty try to rob Flippy, despite seeming to know about his mental problems by their uncharacteristic paranoia at first, and instinct to tie him up. He also blindly trusts the directions out the window without looking for himself which, even if it actually was Shifty giving them, was a bad move.
 * Doggone It: Tries to tug a dollar bill from Shifty's hand instead of letting him focus on driving.
 * Don't Yank My Chain:He and Shifty steal a car that was about to be filled up expecting to get far with it. Also they stay in the car when it's on train tracks even when the boom gates go down.

Shifty
Shifty, unlike his brother, seems to have an intelligence level comparable to some of the worst sometimes making mistakes along with Lifty but more often on his own.
 * Wheelin' and Dealin': He builds a race car without wheels or a steering wheel and when Lifty asked him where the wheels are responds with "Huh?" seeming like he didn't know that cars need wheels.
 * Meat Me for Lunch: They keep a shoe in the fridge.
 * Milkin' It: He jumps up and down in hot air balloon that the wire rendered unstable causing him to fall through.
 * Remains to be Seen: Along with many other characters, he walks in front of Flippy's jeep not seeing what happened coming.
 * Class Act: After the fire, he is shown trying to drag an injured Lifty to an unknown location by his ears.
 * Easy For You to Sleigh: He and Lifty try to rob Flippy, despite seeming to know about his mental problems by their uncharacteristic paranoia at first, and instinct to tie him up. Also, he alone goes back to retrieve the bag of sand that was there to stop the bear trap from cutting his arm off.
 * Doggone It: He focuses on a tug of war with Lifty over a dollar bill instead of driving.
 * Don't Yank My Chain: He and Lifty steal a car that was about to be filled up expecting to get far with it. Also they stay in the car when it's on train tracks even when the boom gates go down.
 * Swelter Skelter: He tries to return the fire on his hands to the blowtorch blowing it up.
 * Buns of Steal: He rivets Lifty's foot to the van presumably to save him when it would have been better for Lifty to jump into Mole's van. He also doesn't go somewhere else to eat the bun.

Cro-Marmot
Due to his body being encased in ice, Cro-Marmot has made almost no actions, dumb or otherwise. The only case of his stupidity would be the one instance before he became frozen.
 * Dino-Sore Days: He bites into the tail of a live dinosaur thinking it was part of the carcass he was about to dine on.

Splendid
Under a similar light to Pop and Lumpy, Splendid frequently screws up his superhero duty, often making things much worse. This is due to putting his own needs first or simply out of dumb decisions.
 * Helping Helps: He flies into a branch and gets Giggles decapitated.
 * Better Off Bread: He catches a falling Giggles but fractures her back in the process. He flies so fast that her eyes detach from her sockets, and he presumably kills a seal and two gulls in an oil spill. Then he flies into space to blow up an asteroid, still carrying Giggles and skinning her face. The asteroid breaks into hundreds of pieces, one of which kills Toothy.
 * It's a Snap: He unknowingly sends a bear trap into Cub's head and decapitates Lumpy with his laser vision.
 * From Hero to Eternity: Trying to save Cuddles through mouth-to-mouth resuscitation, he blows the rabbit to pieces and deafens Giggles. Soon he cuts a giant snowball in two, killing Toothy and Petunia, who were inside it. He then whacks it away with a tree, not checking to see Sniffles and Nutty in the tree house. He doesn't remove Lumpy from a truck before using it to stop the other snowball. This plan ends in the town being flooded and several characters sinking to their deaths in a whirlpool. And he kills Cub by putting him in a dryer, not checking to see him inside his laundry basket.
 * See What Develops: He fails to save Handy and Mime simply because he had nowhere to change out of his disguise. Then he mistakenly attacks Giggles, thinking she was the Mole. He flies off so fast that Giggles and a nearby Toothy are shredded. Finally, he freezes Cuddles with ice breath and cuts him apart in an attempt to thaw him out.
 * Wrath of Con: He sends a pencil tip through the heads of Russell, Disco Bear and Mime. Then he accidentally deafens, suffocates and kills a crowd of fans, also destroying the convention center. Finally, he gets Sniffles crushed with a chunk of debris, which he could have tossed aside before agreeing to give him an autograph.
 * Breaking Wind: After tying Lumpy to a microphone cord, it gets caught around his leg and he squeezes Lumpy to death. Then he flies through Cuddles, does nothing to save the victims of the tornado, and dooms the entire planet because of his book pages. The wise decision would have been to leave the book at home.

Flippy/Fliqpy

 * Hear Today, Gone Tomorrow: Fliqpy rings on Lumpy's doorbell and waits for the moose to answer, taking so long that he leaves. He could have just burst in through the door and killed Lumpy anyways. Doesn't make any attempt to move out of the way of the swinging log which would have hit him even if it had hit Lumpy first.
 * Double Whammy Part I: Gives Handy a foam finger not noticing his obvious disability.

Lammy

 * Every Episode She Stars, is Featured, or Appears in: Carries with her a serial killer or who she believes is one, even though every time he does something bad she gets blamed for the crimes.
 * Royal Flush: Never notices that a certain pickle just crawled into one of the sandwiches she was about to serve when she should have at least seen his inanimate form.
 * All Work and No Play: She, along with Nutty and Sniffles, decide to play on a playground that is still under construction.