Shock therapy nipple clamps
Going further than the electro shock gloves is the shock therapy nipple clamps. The nipple clamp is another traditionally mild S&M tool. The shock therapy is an improvement on the clamps, as a small electric charge is sent through the clamps to the nipple. This time, the partner has control. If they wish, they can change places, with the other partner holding the controls. Some people would think this was torture.