Reverse audio has been a common editing technique for decades, but short reverse sound effect clips became especially popular in meme edits, TikToks and gaming videos as fast visual humor grew online. Rather than pointing to one single source, this sound is best known as a practical transition used to suggest a rewind, broken reality or sudden reset. It often appears alongside exaggerated meme cues such as a vine boom sound or a censor beep, because the backward swell helps set up the next punchline.