John Cena is a WWE wrestler whose entrance became a running joke online because his appearances were often framed as unexpected, even though he was in plain sight. The booming introduction and theme music were taken from WWE broadcasts and cut into short clips shared on YouTube, TikTok and meme pages, where creators used them to announce someone arriving out of nowhere. The joke stuck because the dramatic build-up contrasts with everyday situations, keeping the sound popular for reveals, entrances and surprise edits years after it first went viral.