Cum While I Fry Your Balls

Description: I got a new toy, and i can't wait to try it out on my slave. it's a ball shocker. the slave's useless balls go into the silicone sack, and at the bottom, pressing up against his pathetic nuts, are electrodes. i control when his balls get shocked and how intense the pain is with a remote.  i start out on the lowest setting and begin stroking his little dick. every so often, when i think he's enjoying it too much, i turn the dial up and the electricity becomes more intense.  at first it seems he is not suffering very much, so i turn it up more and more until he's moaning and writhing from the pain. i inform him that every 30 seconds i'm going to crank the dial up until he cums. at this point the pain is becoming excruciating for him, but the power isn't even 3/4 yet. i turn it up again and now he's really suffering. i'm going to fry his fucking nuts to oblivion if he doesn't hurry up and cum!