On TikTok, the toc toc toc label has become shorthand for this short knocking-style clip, shared and reused across edits rather than tied to one famous scene. Creators pass it between videos as a ready-made entrance cue, which is why it keeps appearing in new memes even without a single viral origin moment. Its appeal is practical: the rhythm is instantly recognisable, easy to time to a cut, and short enough for fast-paced feeds, so editors keep reaching for it whenever a knock, arrival, or interruption needs a sound.