There is no clear original source for this clip, and it circulates online simply as a standalone gross-out meme sound rather than a line from a film, show, or song. Its appeal comes from its length and exaggeration, which make it easy to recognise among other fart sounds and reuse across short videos, reaction edits, and prank compilations. Creators tend to save it for moments that need an instant, juvenile punchline, and its continued use comes from that reliability: listeners know exactly what kind of joke is coming as soon as the rumbling starts, even without any visual context.