Nelson Muntz is the school bully from The Simpsons, the long-running American animated sitcom that first aired in 1989, and his mocking ha-ha became one of the show's most recognisable running gags. Whenever a character suffers a humiliating failure, Nelson appears to point and laugh, turning the moment into a joke at their expense. Clips of the laugh later spread through meme pages, reaction videos and soundboards, where creators reused it as a shorthand for teasing someone who messed up. It remains popular because the sound alone instantly communicates mockery without needing any context from the episode.