"how about a different approach. You cut off my balls, then magic them to grow back. But each time they return, they are a bit more sensitive, and each time you find new more painful way to remove them."
"I like the idea of her adding one more condition: He has to wait one month and not jerk off at all. And after that month, she cuts off one ball before he is allowed to fuck her. And then she cuts off the other ball after he finished. So she has one extremly full ball and an empty ball, just to see if they taste different "