Psycholagny is the ability to climax or orgasm from mental stimulation or fantasy without any genital contact or stimulation. It is also referred to as a "psychic orgasm."
More About Psycholagny
While the word "psycholagny" does not see much popular use, the concept is practiced in many sexual lifestyle communities. In BDSM, it can be employed to demonstrate a Dominant's psychological control over their submissive. This type of orgasm is common in play involving chastity devices such as penis cages that do not allow genital stimulation.