I tie my slave up with a spreader bar and handcuffs.

When he's unable to cover up or close his legs, I repeatedly punch him in the balls hard and fast. He squeals in pain and shakes uncontrollably as his nuts are pulverized lol. I take out all my frustration out on his balls, for my own amusement and it doesn't take long before he can't take anymore and rolls over. So I get up and spread his legs from the back and kick him in the balls so hard that he squirms all over the bed and sounds like he's going to cry lol.

Poor guy will be bruised for a week. Oh well, hehe