Head butts, eye gouges, throat strikes, biting, hair pulling, clawing, fish hooking, groin strikes, strike to spine, downward elbow strikes (especially to back of head or spine), spitting and my favorite....fingers in any orifice of the body. It is amazing how fast a guy will let go of you when you put your thumb up his butt.

The police may look at you kinda funny while they're processing you, though ...