A professional wrestling submission move.

The executor stands behind the victim and wraps one arm under the victim's neck. This theoretically clamps down on the carotid artery, cutting off circulation of blood to the brain and making the victim pass out.

Rowdy Roddy Piper, a wrestler for both the World Wrestling Federation and World Championship Wrestling at various times, used the sleeper as his finishing move.

Aside from him, though, the sleeper is most often used to generate cheap heat--when a heel puts a sleeper on a babyface, the referee will check the face's arm three times to see if he's still concious. Invariably, the face's arm will drop the first two times and then miraculously come alive on the third--to the delight and cheers of the audience.