History Main / ContagiousLaughter

* On the ''WesternAnimation/LooneyTunes'' short "Robin Hood Daffy", PorkyPig as Friar Tuck laughs at WesternAnimation/DaffyDuck's clumsy attempts at being RobinHood. Daffy walks up to confront him, but soon starts laughing as well.

* [[RurouniKenshin Hajime Saito]] does this in his fight against Usui after deducing that the later [[spoiler:BecomingTheMask has become complacent regarding his vendetta against Shishio]]. Of course, after laughing together like madmen, [[HaHaHaNo Usui tells him to shut up]], stating that it's not even funny.
* In ''MyNeighborTotoro'', once the father starts to laugh, the children are able to join in.

* On the ''WesternAnimation/LooneyTunes'' short "Robin Hood Daffy", PorkyPig as Friar Tuck laughs at DaffyDuck's clumsy attempts at being RobinHood. Daffy walks up to confront him, but soon starts laughing as well.

* In the special ''[[DisneyAnimatedCanon Goofy's Success Story]]'', Goofy became an accidental star by laughing in a theater. The onstage gag wasn't funny to anyone else, but his laugh got them going.

* In one episode of ''{{Futurama}}'' an EvilLaugh in a haunted house has this effect on Zoidberg.

* In ''{{Sinfest}}'', [[http://www.sinfest.net/archive_page.php?comicID=2644 Squigley, on a trip, lands in Hell and makes a silly joke, and starts to laugh. The damned join in.]]

* In ''PiratesOfTheCaribbean: At World's End'', the main characters on the Black Pearl get involved in a MexicanStandoff (Barbosa, Gibbs, Jack, Will, and Elizabeth). After several ''very'' tense seconds of everyone aiming their guns at everyone else, Barbossa starts laughing, and eventually he can't hold his gun up. Everyone joins in, and lowers their guns too.

* In ''EvilDead 2'', laughter spreads through inanimate objects in the room until Ash is unable to resist joining in.

* ''{{Seven}}'', despite being a ''very'' dark film has a moment where the main characters all think about the absurdity of the "vibrating" home (it's right on top of a subway,) and all break into fits of giggling despite trying to hold it in.

** In another episode Burn enjoys an EvilLaugh over his latest plan, and Homer (who the Evil Plan will directly affect) joins in the laughing. Then Burns stops but Homer keeps going for a while.

* Happens in Part 3 of ''JojosBizarreAdventure''. When minor villain Hol Horse warns Polnareff that his sword (Or rather Stand, Silver Chariot) can't beat Hol's gun (Emperor), Polnareff twists that into a fairly crass joke ("What's that? I can beat your bum? Oh, you're into THAT stuff!") and laughs to himself...which causes Hol Horse to lose control and laugh along with him.

* Se7en, despite being a ''very'' dark film has a moment where the main characters all think about the absurdity of the "vibrating" home (it's right on top of a subway,) and all break into fits of giggling despite trying to hold it in.

* In ''PiratesOfTheCaribbean: At World's End'', everyone on the Black Pearl gets involved in a gigantic MexicanStandoff (twenty people, minimum). After several ''very'' tense seconds of everyone aiming their guns at everyone else, Barbossa starts laughing, and eventually he can't hold his gun up. Everyone joins in, and lowers their guns too.

* In ''PiratesOfTheCaribbean: Dead Man's Chest'', everyone on the Black Pearl gets involved in a gigantic MexicanStandoff (twenty people, minimum). After several ''very'' tense seconds of everyone aiming their guns at everyone else, Barbossa starts laughing so hard, he can't hold his gun up. Everyone joins in, and lowers their guns too.
** And then Barbossa [[MoodWhiplash breaks up the laughter]], and [[CrowningMomentOfFunny everyone instantly resumes their positions in the standoff.]]

* In ''{{MASH}}'', when Blake talks of what kidders they are, Burns tries to join Hawkeye and Trapper John's laughter.

[[AC:Film]]

* In ''WhoFramedRogerRabbit'',

* On the ''LooneyTunes'' short "Robin Hood Daffy", PorkyPig as Friar Tuck laughs at DaffyDuck's clumsy attempts at being RobinHood. Daffy walks up to confront him, but soon starts laughing as well.

Drives the EverybodyLaughsEnding.

** In the speakeasy, when the man saying he had seen a rabbit feigns that he has Harvey next to them, all the rest laugh together.

TruthInTelevision, but useful in fiction for getting a group some release from tension. Also, when a proud character is humiliated, this lets the crowd join together against him.