Practice primarily used by dominant women . Facesitting or queening , is a practice used in BDSM as an act of intense sexual humiliation , where the dominant sits on the slave to force oral -genital contact or oral - anal sex. The slave is subjected to an act of humiliation and used by Sun as a toilet, toilet paper, vaginal shower or anything else you want . Unlike the choking, in facesitting the bottom partner is not deprived of air. Sometimes special furniture can be used , for example a " queening stool " or " smotherbox " . A queening stool is a low seat which fits the face of the submissive and contains an opening to allow oral -genital stimulation and / or oral - anal Dom seated. The position allows the pelvic floor muscles (PFM) to relax and therefore partly exposing the labia minora to intimate touch . The gluteus maximus muscles and the anus, the major muscles of the horse, can relax and sag allowing easy access to the vagina and the anus. The smotherbox ( or smothering box ) has two openings . In a vertical side of the box to the neck of the person who has his head in the smotherbox . The other is at the top of the window to expose their face , where the Sun can sit . Even in this practice should not be underestimated the dangers , chief among them the danger of suffocation, and in accordance with any diseases and health standards .