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''Hellzapoppin''' is a classic 1941 American musical comedy film based on the popular musical of the same name. The very loose plot revolves around the comedic duo Olsen & Johnson who plan to star in a film. The film director suggests a story which they participate in, only to bothered throughout the whole picture by several absurd gags and jokes that make clear that there is NoFourthWall.

However, as the tagline says: "Any resemblance between Hellzapoppin' and a motion picture is entirely coincidental." This is part of the reason why the film wasn't that succesful, despite the appearance of popular actors and comedians like Ole Olsen, Chic Johnson, Mischa Auer, Martha Raye, Hugh Herbert and Shemp Howard from Film/TheThreeStooges. However as TimeMarchesOn the film has been VindicatedByHistory as a surrealistic comedy constantly BreakingTheFourthWall that was far ahead of its time. Certain jokes are almost predecessors of later types of absurd comedy. It was also very influential on later generations of comedy films. The "lindy hop" dance sequences made it also very popular with musical fans. In other words, it's a true CultClassic.

!!This film provides examples of the following tropes:

* AbsurdityAscendant
* Anything Goes
* BlackComedy: A lot of people are shot off screen.
* BreakingTheFourthWall: What wall?
* BrickJoke: A man carrying a plant in a pot is seen throughout the picture. Near the end his plant has grown into a tree.
* ''{{ButterFace}}'': Happens several times, mostly to Martha Raye's character.
* CameraScrew: At a certain point the film projectionist and his girlfriend start fighting. This causes the frame of the film to shift, leaving the top half of one character on the bottom and the bottom half on the top of the screen. So he starts TalkingToHimself.
* FunnyForeigner: Mischa Auer's character.
* HalfTheManHeUsedToBe: Olsen and Johnson each lose the upper and/or lower part of their body through a magical trick. To make sure that nobody notices Johnson poses the upper half of his body above Olsen's lower half of his body. The plan doesn't work well...
* HurricaneOfPuns
* IncrediblyLamePun
* InUniverseCamera: The protagonists address the cameraman throughout the picture. [[CameraAbuse They shout at him to turn on the sound, to fix the broken reel, to rewind the previous footage or to follow them rather than focus on an attractive girl in a swimsuit]].
* KitchenSinkIncluded: Yes, this classical gag is also present here.
* MasterOfDisguise: Hugh Herbert's character.
* MediumAwareness
* [[Series/MysteryScienceTheatre3000 MST]]: At a certain point the protagonists watch the film they are about to star in themselves and give funny commentary on the events they seen. An early example of riffing, although not the first.
* NoFourthWall: Absolutely ''obliterates'' the fourth wall: the characters comment on other plots, they talk to the audience, they talk to the projectionist (and in fact, when the shot goes out of frame, they ''confront'' the projectionist, who it turned out was getting a little action in his booth), they deconstruct myths, they talk to still photographs (which come alive), they pause the phrase, mock the movie they're watching and the movie they're in (including muting the soundtrack and making jokes over it ''[=MST3K=]''-style), criticize the writing, talk about their roles, use double-exposures deliberately, control the direction, and have a running joke with overlaid wording that "Stinky Miller" needs to go to the lobby because his mother is looking for him, and the characters stop in the middle of a musical number to yell at Stinky, who eventually (in silhouette), gets up and leaves. ''Whew.''
* NoGuyWantsToBeChased
* NonFatalExplosions
* OurDemonsAreDifferent: Apparently people arrive in Hell in limousines.
* RapidFireComedy: The pace of this comedy is very high.
* RandomEventsPlot: Every possible comedic idea is used.
* RunningGag
* ShoutOut: Olsen and Johnson at one point notice [[Film/CitizenKane a sled with the word "Rosebud" on it and say: "I thought they burned that?]]"
** Near the end Frankenstein's Monster throws Martha Raye's character back on stage.
* ThrowItIn
* VisualPun
* VitriolicBestBuds: Olsen and Johnson
* ZanyScheme