The title 'pi la' is the romanised form of a short Mandarin slang phrase, and this clip surfaced on a user generated soundboard with no credited creator, so its exact origin is unclear. Like many tiny gag sounds, it circulates through meme pages, chat apps and reaction compilations, where its sub-second length makes it easy to remix and repost. Short bodily-humour effects like this have been a staple of internet comedy for years, from whoopee cushions to sitcom stings, and this one survives on pure timing: one quick burst, one laugh, then the video moves on.