Nelson Muntz is the school bully in the long-running animated series The Simpsons, and his mocking ha-ha is one of the show's most recognisable catchphrases. The laugh is used in the series whenever Nelson spots someone else in trouble, and over time fans lifted the short clip for use outside the show. It spread through meme compilations, reaction videos, and short-form clips, where a single jeer can stand in for an entire joke. Its staying power comes from its clarity: even without seeing Nelson, listeners instantly understand that someone is being teased.