Krusty the Clown is a long-running character from The Simpsons, the animated TV series that debuted in 1989. His laugh became recognizable through the show's repeated use of his burnt-out comedian persona, making it easy to isolate and reuse in short clips. Online, the sound spread in meme edits, reaction videos, and cartoon compilations because it instantly signals forced humor, irony, or washed-up showman energy. It remains popular because even a very short Krusty laugh is enough for viewers to recognize the character and the joke.