Michael Jackson's high-pitched hee-hee vocalisations became one of his most recognisable trademarks during his pop career, often heard between lines in his performances. Short clips of his giggle later circulated online as reaction sounds, where fans and editors reused them to add a cheeky, instantly recognisable laugh to memes, short videos and streams. The sound endures because it is brief, distinctive and carries his playful stage persona without needing any lyrics or explanation.