Street [Samurai} term meaning any type of "blossoming", soft-point or hollow point ammunition coming from the shape the bullet forms when it enters the body.
"I filled that bastard with a clip of ten-mil x-heads. He won't fuck with me again for a while."
An unusual word originating in England that means something along the lines of someone who pwns and is only remarkable as it has no vowels and no U after the Q.