Nelson Muntz is the school bully in the long-running animated series The Simpsons, and his pointed ha ha became his trademark way of laughing at other characters when they suffered a setback. The short, instantly recognisable sound spread through early meme edits, reaction videos and soundboards, where it worked as a quicker alternative to a longer insult. It remains popular because the joke needs no explanation, the voice alone signals mockery, and it fits almost any clip where someone fails, falls or gets caught out.