The way I see it, if its an "honor fight", where someone calls you out to fight over something (sleeping with a girlfriend, sister, something to that effect), nut shots are a no no. But if someone jumps me in the streets or in a bar, I wont hesitate to kick him in the nuts, or poke his friggin eyes out. I like to fight fair, but as soon as I get jumped, all the rules go out the friggin window.