I Tease This Guy and Bust His Balls

It's me with my tied up slave in my garage. i start off by rubbing my ass against his crotch and asking if he wants me to bust his nuts. i kick and knee him in the balls while teasing the threat of it before i do it, every time. during the time i give him to recover, i grind my ass up on him or my knee against his balls. i even pull his underwear down and slowly jerk his super hard dick, then do his favorite thing, rub his balls gently with the palm of my hand. this comes at a cost as later i grab his bare balls from the back and lift him up by them, while crushing them in my hand. after some more hard ballbusting i'm ready to leave when he has the audacity to talk back to me! i turn around and kick him in the balls so hard that his knees buckle from underneath him, then i knee him in nuts hard. before i end, i have to really teach him a lesson so i kick him again really hard.