The laugh comes from Amadeus, the 1984 film about composer Wolfgang Amadeus Mozart, where his high, giggling laugh became one of his most recognisable traits and a shorthand for brilliant, unruly genius. Clipped from the film and shared on soundboards, it spread through meme edits and reaction videos, where creators use it to signal mischief, triumph or delightful madness. It endures because it is instantly recognisable even without the film context, turning a few seconds of laughter into a complete character joke.