The sound comes from The Dark Knight from 2008, where Heath Ledger's Joker sets fire to a towering pile of mob money in a warehouse. Refusing his share, he declares it is not about money but about sending a message, turning the burn into one of the film's most quoted scenes. Clips of the fire and his laugh spread widely online as a reaction for reckless spending and total chaos. It remains popular because the here comes the money contrast makes the waste feel even more shocking.