Cock and ball torture
Cock and ball torture is a sexual activity involving the penis. It is used in BDSM. Cock and ball torture works by constricting the penis or the scrotum.  Methods for cock and ball torture usually involve causing pain to the male genitals, including wax play, kicking, and electrostimulation. The person who enjoys having these things done to them may feel physical pleasure from cock and ball torture via masochism, or emotional pleasure from knowing that the activity gives pleasure to a sadistic partner. Many cock and ball torture activities put the submissive person at risk of being injured.