John Cena is a WWE wrestler whose entrance is announced with his name before his theme music, The Time Is Now, plays. Online, the announcement became a surprise meme in the mid-2010s, spliced into ordinary videos so Cena appeared to interrupt scenes, conversations and sports clips without warning. The joke spread through YouTube, Vine and later TikTok because the sudden shift from normal audio to a loud wrestling entrance was instantly recognisable. It remains popular as a shorthand for an unexpected, over-the-top arrival.