Sure he’s a man. But she’s the one busting a nut.
After a lot of ball busting, the testicles must get damaged. He would most likely be sterile, and testosterone levels most likely dropping. A slow form of castration. But I suppose that what “busting a man’s balls” means. He would become more docile and obedient.
Look at his reaction when she hits his balls. His entire body recoils in shock.
Girls, watch carefully, so you can see just how much it hurts to get hit in the nuts. This will help you appreciate being a girl just a bit more.