Domina or dominatrix or just dom or domme is the dominant female person who carries out BDSM performances, séances. Dominatrix usually takes the sadistic role in paid sadomasochistic sexual-service in form of violent physical and psychological dominance and humiliation in order to give submissive (or just sub) sex-buyers perverse sexual pleasure, which includes, for example, tying up, whipping, verbal humiliation, strap-on anal penetration, treading on testicles, dripping hot wax on sensitive areas etc.