The phrase comes from Dexter, the Showtime crime drama centred on Dexter Morgan, where the line became one of the show's most quoted confrontations. Clipped and shared as a short audio meme, it spread through reaction videos, gaming edits and TikTok-style reveals, where creators used it to announce an ambush or twist. Its staying power comes from its simplicity: a single familiar voice line instantly signals that something unexpected has just happened, without needing any context from the original scene.