History Main / LethallyStupid

* ''WesternAnimation/BeavisAndButtHead'', so very much. Most of their misadventures result will result in massive collateral damage and often injuries to supporting characters and bystanders. This comes to a head in TheMovie, ''WesternAnimation/BeavisAndButtHeadDoAmerica'', where they unwittingly cause more chaos, bodily harm and destruction in one trip across the country than most ''terrorists'' do in a lifetime. It's never out of malice, but just because they're too stupid to fully comprehend the ramifications of, well, anything they're doing.

** [=SpongeBob=] himself, whose relentless stupidity, has driven many people (mainly Squidward and Mrs. Puff) borderline, if not completely, insane. A shockingly implied example is in the episode "Sandy's Rocket" when there was a NoodleIncident involving him and Sandy's whirlybird that caused lots of deaths.

It may also overlap with IJustShotMarvinInTheFace, when the stupidity involves firearms, and ExplosiveStupidity, when it involves explosives. Compare LethalNegligence, where the danger is due to laziness rather than stupidity.

** To a lesser degree, [=SpongeBob=] himself, whose relentless stupidity, primarily in the later seasons, has driven many people (mainly Squidward and Mrs. Puff) borderline, if not completely, insane.

* ''Film/AvengersInfinityWar'' provides one of the more infamous examples of this. At the climax of the film the group on Titan nearly manages to subdue Thanos when Star-Lord loses control on hearing that Thanos killed Gamora and attacks him, throwing the plan off and causing Thanos to regain control and beat the group, which leads to half of all life in the universe being wiped out.

* ''WesternAnimation/{{Chowder}}'': The TitleCharacter is incredibly ditzy, with most of the show's problems happening because he constantly ignores Mung's warnings and teachings about the potentially dangerous foods they deal with. It eventually reaches the point that Mung starts to blame ''himself'' for the trouble that Chowder causes because he should know better to expect Chowder to listen.

** Big Billy is the least mean of the Gangreen Gang, but also the most destructive because his strength is as huge as his idiocy.

%%* Many reviewers are this in ''Website/ThatGuyWithTheGlasses''.

It may also overlap with IJustShotMarvinInTheFace, when the stupidity involves firearms, and ExplosiveStupidity, when it involves explosives.

* ''WesternAnimation/TheIronGiant'': Kent Mansley's paranoia and obsession with destroying the titular colossal cyborg ultimately does him in when he orders a nuke launched at the Giant--standing about 5 feet away from him and in the center of town. Thus, the missile will vaporize not only the Giant, but also everyone in town--including Mansley himself. When the General calls him out, even Mansley [[DidntThinkThisThrough can't believe he how idiotic that move was.]] He then [[ScrewThisImOuttaHere immediately attempts to flee]] [[DirtyCoward and save himself and leave the town to their fates]]. He doesn't get very far.

'''Rogard:''' ''(angrily)'' There's no way to survive this, you ''idiot!''\\

* ''WesternAnimation/BeavisAndButtHead'', so very much. Most of their misadventures result will result in massive collateral damage and often injuries to supporting characters and bystanders. This comes to a head in TheMovie, ''WesternAnimation/BeavisAndButtHead'', where they unwittingly cause more chaos, bodily harm and destruction in one trip across the country than most ''terrorists'' do in a lifetime. It's never out of malice, but just because they're too stupid to fully comprehend the ramifications of, well, anything they're doing.

** Richard Watterson due to his BumblingDad personality, he can cause disasters by accidents. In one episode, he almost dropped a solid block of concrete on his sons heads because he wanted [[BucketBoobyTrap to prank them]] and didn't realize wet cement dries.

* ''WesternAnimation/TheAmazingWorldOfGumball'': Richard Watterson due to his BumblingDad personality, he can cause disasters by accidents. In one episode, he almost dropped a solid block of concrete on his sons heads because he wanted [[BucketBoobyTrap to prank them]] and didn't realize wet cement dries.

* ''WesternAnimation/TuffPuppy'': Dudley Puppy often accidentally inflicts AmusingInjuries on fellow agents, citizens, or bad guys. But especially [[TheChewToy Kitty Katswell]].

* From ''WesternAnimation/TransformersPrime'' Miko Nakadai, full stop. The girl has proven on ''multiple'' occasions that she simply cannot learn from her mistakes. Even after nearly getting herself killed (several times), nearly getting her friends killed (again, ''several'' times), and nearly getting some of the bots themselves killed ([[OverlyLongGag notice a pattern yet?]]). Miko still hasn't learned that she'd be of more help to the Autobots by ''not'' sneaking onto a battlefield and becoming a protective burden. After her recklessness nearly gets Bulkhead killed, she ''finally'' gets some much-needed CharacterDevelopment that results in her stopping being quite so prone to LeeroyJenkins style stupidity. She also fond the [[PowerArmor Apex Armor]] around the same time, allowing her to actually contribute during fights.

* ''WesternAnimation/TheIronGiant'': Kent Mansley's paranoia and obsession with destroying the titular colossal cyborg ultimately does him in when he orders a nuke launched at the Giant--standing about 5 feet away from him and in the center of town. Thus, the missile will vaporize not only the Giant, but also everyone in town--including Mansley himself. When the General calls him out, even Mansley [[DidntThinkThisThrough can't believe he how idiotic that move was.]] [[DirtyCoward immediately tries to flee and save himself and leave the town to their fates]].

* ''WesternAnimation/TheIronGiant'': Kent Mansley's paranoia and obsession with destroying the titular colossal cyborg ultimately does him in when he orders a nuke launched at the Giant--standing about 50 feet away from him and in the center of town. Thus, the missile will vaporize not only the Giant, but also everyone in town--including Mansley himself. When the General calls him out, even Mansley [[DidntThinkThisThrough can't believe he how idiotic that move was.]] [[DirtyCoward immediately tries to flee and save himself and leave the town to their fates]].

'''Rogard''': Hold him, men. Make sure he stays here, like a good soldier.\\

* ''WesternAnimation/TheIronGiant'': Kent Mansley's paranoia and obsession with destroying the titular colossal cyborg ultimately does him in when he orders a nuke launched at the Giant--standing about 50 feet away from him and in the center of town. Thus, the missile will vaporize not only the Giant, but also everyone in town--including Mansley himself. When the General calls him out, even Mansley [[DidntThinkThisThrough can't believe he how idiotic that move was.]].

'''Mansley''': [[OhCrap Ohhh...]]

* The ''LightNovel/DirtyPair'' are not ''completely'' dumb, but they are a bit air-headed (in the sense of "boy-crazy" and "fashion-conscious") and have a crappy luck that manifests in [[ApocalypseHow apocalyptic]] levels of collateral damage (sometimes because they didn't notice that teeny-tiny detail in their flightiness that said luck decided to turn into the trigger for said cataclysms).

* ''WesternAnimation/TheIronGiant'': Kent Mansley's paranoia and obsession with destroying the titular colossal cyborg ultimately does him in when he orders a nuke launched at the Giant--standing about 50 feet away from him and in the center of town. Thus, the missile will vaporize not only the Giant, but also everyone in town--including Mansley himself. When the General calls him out, even Mansley [[DidntThinkThisThrough can't believe can't believe he did something so idiotic]].

** ''WesternAnimation/TheIronGiant'': Kent Mansley's paranoia and obsession with destroying the titular colossal cyborg ultimately does him in when he orders a nuke launched at the Giant--standing about 50 feet away from him and in the center of town. Thus, the missile will vaporize not only the Giant, but also everyone in town--including Mansley himself. When the General calls him out, even Mansley [[DidntThinkThisThrough can't believe can't believe he did something so idiotic]].

** ''WesternAnimation/TheIronGiant'': Kent Mansley's paranoia and obsession with destroying the titular colossal cyborg ultimately does him in when he orders a nuke launched at the Giant--standing about 50 feet away from him and in the center of town. Thus, the missile will vaporize not only the Giant, but also everyone in town--including Mansley himself. When the General calls him out, even Mansley [[DidntThinkThisThrough can't believe can't believe he did something so idiotic]].
'''Rogard''': That missile is targeted to the Giant's ''current position!!'' '''''Where's the Giant, Mansley?!'''''\\

This {{trope}} is close to LethalKlutz, though a [[TitleDrop Lethally Stupid]] character doesn't have to be clumsy to cause disasters. JustForFun/NotToBeConfusedWith TooDumbToLive, when the character's stupidity causes their ''own'' [[CharacterDeath death]]. Also, this may not always cause death, but they can make you want to kill them!

* ''Film/DumbAndDumber'': Lloyd and Harry perform such things as accidentally killing a man (a prank gone bad because of an ulcer... and then they accidentally fed the man ''rat poison'' instead of his ulcer pills (in their defense, the man had the pills in his pocket because he was going to poison ''them'')) and an endangered owl (they popped a champagne cork and it hit the owl) among other acts of chaos that they are too dumb to even notice they created. Lloyd is especially bad because he is both perfectly willing and able to cause malicious acts in revenge for slights (but is too dumb to think of how bad things can get as a result) and has even ''less'' common sense than Harry.
* ''Film/DueDate'': There's a character who spends the whole movie making the protagonist’s life hell out of sheer stupidity.

* Master Shake from ''WesternAnimation/AquaTeenHungerForce'', such as provoking the MonsterOfTheWeek or abusing one of Frylock's inventions, [[TooDumbToLive although it usually leads to his own demise]].

* ''WesternAnimation/AmericanDad's'' Stan Smith veers to this with his self-serving ideas of what is right, and it doesn't help that he has access to dangerous CIA resources.

* ''WesternAnimation/{{Archer}}'': Sterling Archer is known as "the world's most dangerous spy"-and is equally dangerous whether you're with him or against him. May be more a case of Lethally BrilliantButLazy.

%%zce* Patrick Star of ''Franchise/SpongeBobSquarePants'', hands down.

* From ''WesternAnimation/TuffPuppy'', Dudley Puppy often accidentally inflicts AmusingInjuries on fellow agents, citizens, or bad guys. But especially [[TheChewToy Kitty Katswell]].