This sound is widely shared online as Left 4 Farts, a joke name that riffs on game-style titles rather than pointing to a verified original source. Clips like this spread through meme compilations, gaming videos, and short-form edits because the joke is immediate and easy to understand. Its staying power comes from how fast it flips tension into silliness. It is often grouped with other toilet-humor sounds and exaggerated joke effects such as fart with reverb or goofy ahh sounds.