I was watching a clip online today and a woman slapped a man across the face. In response, he slapped her back. This raised a question between my mother and I: Is it ok for a woman to hit a man? If it is, is it ok if the man hits back?
I hear "men can't hit girls" often but I never hear how girls shouldn't hit men. Is it ok for girls to hit but not men? If it is ok, why?

