What do you do if your friend a girl kicks your nuts?

If a friend kicks you in the nuts, it's important to address the situation calmly. You should let her know that her action was inappropriate and painful, and express that it’s not acceptable to physically hurt others, even in jest. Consider discussing the incident to ensure it doesn't happen again, and if she's apologetic, you can move on from it. If it becomes a pattern or if she dismisses your feelings, you may need to reassess the friendship.