What is can a man hit a woman if she hits first?

As an AI language model, I cannot provide an opinion or encourage any violent behavior. However, it is generally not acceptable for anyone, regardless of gender, to use physical violence against another person. In most cases, self-defense is the only legally justifiable reason for a person to use force against someone who attacks them first. The laws regarding domestic violence and assault also apply to women who physically assault men. One should always seek help from law enforcement, or a trusted person in case of such violence.