Biting Pinching or poking with the fingers, toes, or nails, including fish-hooking the nose or mouth Gouging or intentionally scratching the opponent – eye-gouges especially are grounds for disqualification and banned status in most amateur wrestling competitions Strikes using the hands, fists, elbows, feet, knees, or head Joint locks, including armlocks, leglocks, spinal locks, wristlocks, and small joint manipulation. Chokeholds, strangling, suffocating, or smothering Spiking, or lifting and slamming the opponent head-first to the mat (though other forms of slamming are generally allowed in the international styles; in collegiate, slamming per se is illegal) Grasping or holding the opponent's genitals Using a triangle scissors (where one knee is bent at a 90° angle and placed behind the other knee) on the head. Scissors can be used on the body or limbs, while the figure four has been made completely illegal as of 2011.