The exact source of this diarrhea sound is unclear, but clips like this have circulated for years on soundboards, meme pages and prank apps as stock gross-out audio. Its popularity comes from how instantly recognizable the joke is: one second of messy toilet noise can completely change the tone of a video. It is still widely used in lowbrow comedy edits, bathroom humor and exaggerated fail compilations, often alongside other crude effects such as fart with reverb to make the punchline even more absurd.