The origin of this particular clip is not documented: it appears as a brief user-uploaded soundboard entry under a plain Chinese title, with no credited show, film or artist attached. Its appeal comes from universality rather than a source: bathroom humor needs no translation, and a sub-second rude noise is easy to drop into memes, pranks and reaction edits. Short gross-out sounds like this circulate widely because they are instantly recognizable, require no context and deliver their joke in a single beat.