Squeeze his balls

You decide on something that would make any man fear. You reach your hand down towards his vulnerable manhood, your fingers wrapping around the gentle orbs and suddenly, clamp down hard on them.

He lets out a pained groan, both of his hands coming to grip your wrist and try to pry it off, but you are much stronger than you look and he fails to free himself. "Please, let go. You are gonna crush them!" He pleads.

"Too bad, you should have thought about that before betraying me." You scowl. "Did you really think i wouldn't find out?"