If you are looking for more ways to humiliate your submissive and serve better punishments why not try fisting. Fisting is a sexual activity that involves putting your hand and forearm into the vagina or anus of your submissive. What should be noted is that fisting does not involve forcing a clenched fist inside the vagina or anus as you might think. What does happen is that all five fingers are inserted straight and held as close together as possible then slowly inserted. A lot of lubrication is need so make sure you are well prepared. Once inserted you can then either clench the fingers into a fist or leave them straight.
There are more severe forms known as punching and this is where a fully clenched fist is inserted and withdrawn. Double fisting is also a possibility but this is only for more experienced people. In either case the pleasure is derived from the stretching of the vagina or anus more so than the thrusting movement of the hands.