Fart noises have been a staple of schoolyard and cartoon humour for decades, but this short version is tied to modern meme editing and the slang word sus, short for suspicious, which spread widely online in the early 2020s. Creators pair the sound with a knowing look or denial to imply guilt without any dialogue. It sits alongside other joke variants like fart with reverb in soundboard collections, and its popularity comes from how instantly it turns an ordinary clip into an accusation that everyone understands.