-> ''Ho-hum, the tune is dumb, the words don't mean a thing!''
-> ''Isn't this a silly song for anyone to sing?''
-->-- "The Silly Song", ''WesternAnimation/SnowWhiteAndTheSevenDwarfs''

What occurs when characters who are normally at least somewhat straight-laced decide to shake things up and get down with their bad selves to, well, a Silly Song.

The characters don't even have to be singing the song themselves. Someone unseen or offscreen could be singing it, or it could obviously be playing on a radio or stereo or over a P.A. Whatever the case, the characters will (sometimes literally) drop whatever they're doing and break into a boisterous (and, uh, [[BlatantLies totally spontaneous]]) dance sequence (or maybe some rollicking slapstick or acrobatics) that never fails to get the audience right into the mood along with them. It is often accompanied with [[DisneyAcidSequence crazy visuals that are different from the rest of the work]]. When the song is over, [[BigLippedAlligatorMoment the characters will almost always simply resume their previous activities as if they'd never stopped performing them]].

Pretty much obligatory in any musical (and not just in the Western world, either). If the ''entire'' show is silly, this is the number that is by far the silliest. It can overlap with VillainSong if sung by a LaughablyEvil character.
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!!Examples:

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[[folder: Film ]]

* In ''Film/TheGayDivorcee'' (1934), the guests at the seaside hotel, including fussy lawyer Egbert Fitzgerald, do a random silly dance and song called "Let's K-nock K-nees."
* Definitely the "Surfing Bird" sequence in ''Back To The Beach''. It ''is'' relevant to the plot (such as it is), but also features dancers wearing outrageous wigs and an unexpected solo by Pee-Wee Herman, who arrives without warning and then leaves just as quickly.
* "Blunt the Knives" in ''Film/TheHobbitAnUnexpectedJourney''. When Bilbo complains about the dwarves' table manners, they burst into a song where they mock him. The film is otherwise not a musical, and features only one other, much more serious song (not counting a few lines sung by Gollum and the Great Goblin). The scene and the song were also in [[Literature/TheHobbit the book]], but it features much more songs and poems, so this particular one stands out a lot less.
* ''Film/TheMuppets2011'' features Tex Richman's impromptu rap, doubling as a BigLippedAlligatorMoment and a VillainSong. Keep in mind that Tex Richman is, for the remainder of the movie, a very serious and brooding character. The ridiculousness of what just happened is quickly lampshaded.
-->'''Tex:''' The answer is no.
-->'''Kermit:''' You could've just said that.
* In the film version of ''Film/SweeneyToddTheDemonBarberOfFleetStreet'', "By the Sea" is this, mainly due to the bright and beautiful imagery, which dramatically clashes with the rest of the film's grime and darkness, and the fact that it's a ''cannibal'' singing about how she'd like to settle down and live by the beach. The hilarity is compounded by [[TheComicallySerious Sweeney]] thoroughly ''[[TheStoic not]]'' getting into the musical number.

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[[folder: Video Games]]

* Right before the final level in ''VideoGame/{{Control}}'', Jesse walks into a room in [[InnBetweenTheWorlds the Oceanview Motel]], and immediately sees [[https://www.youtube.com/watch?v=8EJufYOzp8U Dr. Darling singing "Dynamite"]], doing silly dances and wearing goofy [=80s=] outfits. The only thing Jesse can do is laugh.

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[[folder: Western Animation ]]

* So, so many Disney classics:
** ''WesternAnimation/SnowWhiteAndTheSevenDwarfs'': "The Silly Song" is the TropeNamer, in a scene where the dwarfs and Snow White are partying. The lyrics contain a LampshadeHanging on how nonsensical the song is (see the page quote).
** ''WesternAnimation/{{Pinocchio}}'': "I've Got No Strings"
** ''WesternAnimation/{{Dumbo}}'': "When I See An Elephant Fly"
** ''WesternAnimation/{{The Little Mermaid|1989}}'': "Les Poissons" (definitely counts as a [[BigLippedAlligatorMoment BLAM]] song)
** ''WesternAnimation/BeautyAndTheBeast'': "Gaston" (also counts as a VillainSong)
** ''WesternAnimation/{{Aladdin}}'': "Friend Like Me"
** ''WesternAnimation/{{The Lion King|1994}}'': "Hakuna Matata"
** ''WesternAnimation/{{Pocahontas}}'': "Mine, Mine, Mine" (again, also a VillainSong)
** ''WesternAnimation/{{The Hunchback of Notre Dame|Disney}}'': "Topsy Turvy." (Also maybe "A Guy Like You," although in context that's more of an IAmBecomingSong.)
** ''WesternAnimation/{{Frozen|2013}}'': "In Summer", which is played for lots and lots of BlackComedy.
* Season 5 of ''WesternAnimation/MiraculousLadybug'' uses the song "Snapping My Fingers" twice:
** First, in "Deflagration" BigBad Gabriel spontaneously dances to the song when he discovers the {{Secret Identity}} of the two new holders of the Miraculouses. Gabriel is otherwise an extremely serious man, and even his [[EvilIsHammy hammier]] AlterEgo Monarch has never broken out in song and dance in the main series. [[LettingTheAirOutOfTheBand His dancing stops and the music peters out]] when he nearly bumps into his assistant Nathalie. TheSongRemainsTheSame this time, so the fact that it's suddenly GratuitousFrench makes it even more jarring in dubs.
** Later, in "Emotion" Felix properly sings the song as he snaps people away with the power of his Amok. It's a TranslatedCoverVersion now, so while it's at least understandable for viewers who don't speak French, it's really no more ''expected'' than before because the series isn't normally a musical and the rest of the episode doesn't have characters randomly bursting into song, nor is Felix a music-themed character so it's not like singing is part of his powers. It's just a catchy ditty.
* [[WesternAnimation/VeggieTales "And now it's time for Silly Songs with Larry]], [[ExactlyWhatItSaysOnTheTin the part of the show where Larry comes out and sings a silly song."]]
* ''WesternAnimation/YellowSubmarine'' gave us the uber-simple yet catchy "All Together Now."
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