It's more than just a grip. A series of taps or ball spankings can have quite an effect as well. Men are deeply tied to their balls and penis. It's not just a pain thing, it's psychological. Smack the balls just right and he'll do anything especially if there's the possibility of penis play. Many men will cum from just ballplay.

With that in mind grabbing, slapping, kneeing - all have an effect physically, emotionally and sexually on men. They feel their balls are their power and having them used in such a way can be a confusing combination of humiliation, excitement and submission.

Some people discover that below the balls is a button. Pushed just right puts a man into a sort of suspension and under control. Find it and you have him.