Kicking can be too much

I had a girlfriend who over time learned that I like my balls hit, she started out with just playing with them, one day she squeezed a little, while looking at me to see if it was to hard and while it hurt and she stoped I got very hard, and we talked, and from then on it was slaps and squeezes frequently.

Out on a walk, ball tap, squeezing my balls druing hand jobs, its was great very playful fun times.

It doesn't have to be a Dom sub thing, it can just be a sensation you enjoy and she enjoys to cause.

She didn't do it to hurt me she did it mostly as a sexual tease/playful thing and I enjoy it like that as well.