This clip circulates as a short seasonal soundboard sound rather than a famous line from a film, television show or viral video, and no documented origin is attached to its title. That anonymity suits its subject, because trick or treat is a familiar Halloween greeting that needs no explanation for most viewers. Online creators reuse it mainly around October for costume videos, haunted house clips and playful pranks, where a few seconds of audio can set the scene instantly. Its brevity and instantly recognisable phrase help it stay useful year after year, even without a famous source behind it.