In a fight between two assassins, one managed to trap the other in a headscissors. She pulled his face against her crotch and squeezed with her thighs, choking him. He couldn't pry her legs apart and he could not yell for help, with his face smothered by her crotch. He passed out in her hold. What could he have done to free himself? Was his situation hopeless as soon as she applied the hold?