Tiger Mouth

Step 1: start with a reinforced gedan haito, the reinforcing hand over the haito wrist

Step 2: rotate the haito until the palm faces the face, keeping the reinforcement in place

Step 3: rotate the haito palm out, then bend the hand to push the shuto down, opening the thumb and creating the Tiger Mouth

Final step: force the Tiger Mouth down, snapping whatever is grasped.