The exact origin of this specific bark-and-fart clip is unclear, but sounds like this spread widely through meme pages, short-form video edits and prank compilations because they deliver a joke almost instantly. It belongs to the same family of crude, fast-reaction audio as fart with reverb and other goofy ahh sounds. Creators keep using it because the setup is universal: a bark suggests tension or surprise, and the fart immediately collapses that tension into silly humor that works even without dialogue.