The song comes from the 1939 film The Wizard of Oz, where the Munchkins sing it after Dorothy's house lands on the Wicked Witch of the East. Written for the film's Munchkinland sequence, it became one of its most quoted musical moments and has lived on through stage productions, parodies and television references. Online, the chorus is now widely reused as a short celebratory meme sound, especially when a creator wants to mark the downfall of an opponent, a bad idea or an annoying trend.