This is a little tradition my ballbusting sub & I have, we celebrate monthly anniversaries with a nice, hard kick to the nuts. Yup, one kick per month together. As this is our One Year anniversary, I graciously let him fuck his fleshlight while I have access to his balls from behind. I push him into the fleshlight, making him fuck it harder while I squeeze his balls in between each kick. Finally, I tell him to cum and while he does I repeatedly punch him in the balls.

Happy Anniversary, slave honnu! :D