Deadtail
Similar to a deadleg but you knee the victim as hard as you can in the ass
Guy 1: Dude! why are you walking like that?
Guy 2: Because Chip just gave me a deadtail!
and
Dude 1: Dude, go nail Bob with a Deadtail now. He's bending over. Perfect chance!
Dude 2: Haha whats a Deadtail?
*Dude 1 gives Dude 2 a Deadtail*
Dude 2: what the fuck man?!
Dude 1: Well you asked for it
Guy 2: Because Chip just gave me a deadtail!
and
Dude 1: Dude, go nail Bob with a Deadtail now. He's bending over. Perfect chance!
Dude 2: Haha whats a Deadtail?
*Dude 1 gives Dude 2 a Deadtail*
Dude 2: what the fuck man?!
Dude 1: Well you asked for it