Apparently if you land it right it can be worse than a kick to the balls. If you land right on the cunt and the pelvic bone you can cause serious damage. There's also more nerve endings on a cunt then on a testicle. More nerve endings = more pain, it all depends where you're hit I guess. I've hit my own balls just out of curiosity and sometimes don't feel a thing, other times it hurts bad, but most of the pain goes to your stomach. It feels like a 30 minute work out put into 30 seconds...which makes some people pass out or vomit. I guess your stomach muscles release the same thing when you get hit in the groin as when you get a work out, which makes them ache. But I could be wrong.