What do you think about my mom's behavior and the whole situation?

Hello all, I'm Fabian. I'm not native and to learn better english I try to writting without translator, so please don't point my mistakes!

I practise kickboxing in club and at home I train or very lightly spar e.g. with my bro or sometimes even with parents, just for fun. Even now my mom wants to try kickboxing gym for fitness and she tries to learn basics from me.

But to the point:

Recently during such home sparring, my mom kicked me in the balls.XD. course it wasn't hard kick- just a bit but enough to "win". My mom did it intentionally and said she wanted to win with me at least once and basically she did it as a joke. We both were laughing about it. What do you think about this joke and the whole situation?