The line comes from Dexter, the crime drama about a forensic analyst who leads a double life, and is spoken by Sergeant James Doakes, Dexter Morgan's suspicious colleague. Doakes uses the blunt greeting when he catches Dexter off guard, and the delivery quickly became one of the show's most quoted moments. Clips of the shout spread across YouTube and later TikTok and meme pages, where editors stripped it to a few seconds for reveals and jump scares. Its short length, clear wording and aggressive timing keep it useful for creators who want an instant, recognisable shock.