Shared online as a short reaction clip under the name Can't Believe Rock, this sound has circulated on soundboards and in short-form edits where a single stunned line is needed. Creators reuse it because the meaning is clear without any context, making it easy to drop over gameplay fails, prank reveals and surprising clips from streams. Its popularity comes from timing rather than backstory, and it continues to appear in compilations and meme edits built around disbelief and second-hand embarrassment.