The clip is drawn from the television series Dexter, where Sergeant James Doakes, played by Erik King, confronts Dexter Morgan with the line that became his catchphrase. Clips of the moment circulated online for years as a Dexter meme, detached from the original scene and reused whenever someone appears without warning. Its short length and clear setup made it ideal for soundboards, reaction videos and edited reveals, and it remains a standard shorthand for an ambush that the victim, and often the viewer, never saw coming.