A guy that gets hit by a girl, it would seem to some that he would have a "right" to hit her back, but unfortunately it's not as simple as that on so many levels. First off, typically when someone asks the question as to whether someone has a right to hit someone back, it speaks more to striking someone in retaliation than anything. this is never a good thing.

If a male were to be defending himself from being all out attacked, that is a different story. If a lady slaps me, it hurts, and likely will anger me but in no way would I be defending myself by slapping her back. It is a far cry from an all out attack. There is a very large gap between the two things. And even if one were defending himself, there is a lot to be said about how much defense is enough to protect himself, since most commonly, the male is stronger anyway.

Way too complex of a question that without context it all means really literally nothing.

On top of all of this, I may have rights to a great number of things but it takes a real strong person of character to know that just having the right to do something does not mean we have to invoke that right. What the law says is a right, isn't always necessarily the 'right' thing to do... if you get my meaning.