John Cena is a WWE wrestler whose televised entrance, complete with a booming ring announcement and his theme music, became a recurring internet joke. Editors began cutting the announcement into unrelated videos so Cena would seemingly appear out of nowhere, interrupting a calm scene with a loud arena moment. The format spread through Vine, YouTube, and later TikTok, where the sudden switch became a shorthand for an unexpected arrival. It remains popular because almost everyone recognises the voice, the name, and the musical cue within seconds.