The loud bonk is a generic cartoon-style impact effect rather than a line from a film or show, so it has no single credited origin. Sounds like this have long been used in animation to make a hit feel funny instead of painful, and the same idea carried over to online video. On soundboards and in short-form edits, creators reuse the clip as a quick, recognisable punchline for fails, pranks, and slapstick moments. Its simplicity is the reason it lasts: one loud hit instantly tells viewers something went wrong.