Cock-and-ball torture (CBT) refers to the BDSM practice of inflicting/causing pain or discomfort to the penis and testicles. Dominants will make use of this activity with their submissives/slaves, mostly by a Dominatrix. The scrotum and penis are full of nerve endings, making them extremely sensitive. For some people the very thought of CBT makes them cringe, whilst for others, particularly masochists, the idea of being hurt in their 'nether' regions is highly erotic and very pleasurable. The greatest risk of CBT is the loss of blood flow to the penis or testicles, which can cause severe and irreversible damage. Various techniques and toys can be used during cock-and-ball torture. Slapping, squeezing, stepping on, and kicking the testicles and penis are all forms of cock-and-ball torture. Toys and other equipment including floggers, ball stretchers, and cock cages are often used.
Some other extreme forms of cock-and-ball torture include inflating the scrotum by injecting it with a saline solution or shoving a needle/nail through the scrotum or penis. Cock bondage refers to when bondage techniques are applied to the penis and testicles. Items like rope, cock rings, and various other BDSM instruments are also used. Weights can also be tied to the penis or testicles. These can vary in size and shape. As with all other BDSM activities and practices that carry potentially high medical risks, the level of pain endured or delivered is dependent on the submissive/slave and Dominant involved in that play session.