Pazuzu originates in ancient Mesopotamian religion as a wind demon, but most listeners know the name from The Exorcist, the 1973 horror film where Pazuzu is the possessing entity. The cackling laugh associated with the name has circulated for years on soundboards and meme pages as shorthand for pure evil amusement. Horror editors and streamers keep using it because a demonic laugh needs no explanation, it instantly signals possession, a boss fight, or a dark plot twist. Its short length also makes it easy to drop into edits without trimming.