Falcon Claw

The act of inserting the thumb into a womans anus whilst hitting her doggy style. Once the thumb is inserted the falcon claw becomes complete by trying to clench the hand , squeezing ass cheek with your fingers that are not inserted and the thumb inserted trying to meet with clenching fingers. This way they cannot run away.

"Yeah bro , i was hitting it from behind stuck the thumb in and falcon clawed. She wasn't getting away from me"