Erotic sexual enial, also known as orgasm denial, is a sexual practice in which a person is kept in the plateau phase of the human sexual response cycle for an extended length of time without satisfying climax. This is sometimes practiced in association with BDSM, and can be thought of as a more extreme version of orgasm control, which ends in satisfying climax. The subject may either be allowed an orgasm at the end (in which case, the orgasm is generally much stronger than normal), or denied one, in which case they will generally feel strong feelings of sexual frustration.