This is still one of these practices that have my preference by the diversity which this one offers. We are talking here about torture of the genital organs and it can be practiced under various forms with thresholds of pains very different for the submissive. Where to start ?
Why not first with a bondage of the balls with a rope so that everything comes out well and then be entirely at my disposal. Then a few slaps by hand or a more intense flogging and then with my bare feet or with my boots give him a kick on the genitals or use the testicles of my submissive as a punching bag. Another form of torture is the use of stretchers or parachutes balls associated with various weights from a few grams to several kilograms for the most resistant which leads to a significant traction and pressure on the testicles. To vary my pleasures I sometimes decide not to stretch the balls but rather to squeeze or crush them with a system of boards and screws in which balls are then clamped.
Sometimes I am also tempted by a few cigarette burns or most commonly by the use of candle wax to burn or epilate the scrotum before going to torture the penis by electrical stimulation which can quickly become then if I want an electro-torture which will bring you to the highest levels of enjoyment in pain by applying electrodes around the penis or scrotum in order to deliver electric shocks of varying intensity. Is not this precisely the best way of enjoyment to look for by the submissive or the slave ? I think so.
Obviously before this ultimate reward my submissive will have at first to deserve it. Otherwise I can also decide to deprive him of all enjoyment by locking him in a chastity belt of which I keep the key for a longer or shorter duration or until his next visit to me.