The bonk has no single original source, as it belongs to the long tradition of cartoon slapstick sound design, where a hollow hit signals a harmless bump rather than real injury. It spread online through meme edits, short comedy videos and gaming clips, where creators needed a quick, instantly recognisable way to mark a fail. Because the sound is only about two seconds long, it fits easily into tight edits and reaction videos, and it remains popular for its simplicity and its immediate, playful timing.