Male chastity is a practice of locking up the male genitalia in a male chastity device (commonly referred to as a male cock cage). The purpose of male chastity in the 21st century is commonly used in BDSM play. In such a scenario the submissive is locked into a male chastity device by the dominant (referred to as a keyholder). The keyholder holds all the keys to the securely fastened male cock cage, and is the only person whom decides when the male cock cage can come off. The length of time is determined by the keyholder, and can vary from a few hours to a 24/7 continual male chastity lifestyle.
Submissives and dominants alike enjoy chastity for the surrender/control it offers. The submissive is surrendering their most important organ, and one that can offer the greatest amount of pleasure. While the dominant has full control over said organ during the time spent in the male chastity device. During the time the submissive is in a male cock cage, he is unable to obtain a full erection. The submissive also cannot have an orgasm until the male chastity device comes off.
This experience sounds unpleasant; however, it can be extremely pleasurable. When the submissive attempts to become erect while in a male cock cage, he will only swell up inside, which feels like a firm grip. This builds arousal in the submissive, which can continue to build over time. This pent up arousal can even become more intense than the orgasm they so desire. Once the submissive is freed from the male chastity device to have an orgasm, it will be more intense than any other orgasm he has experienced. The longer the submissive is in a male chastity device, the more intense the final orgasm will be.