This sound is mainly used online as a generic clown laugh rather than a quote tied to one clearly documented source. It appears in short meme edits, reaction posts and prank-style videos where the joke is that someone has embarrassed themselves. Its long, repetitive cackle makes it useful for extending a reaction longer than a quick rimshot or sting. It stays popular because the meaning is immediate: the laugh tells viewers that the person on screen is being treated like a clown.