In general, BDSM play is usually structured such that it is possible for the consenting partner to withdraw his or her consent during a scene; for example, by using a safeword that was agreed on in advance. Bisexual pornography is a genre of pornography which most typically depicts one woman and two men mature milfs who all perform sex acts on each other. Throughout history, women have not had the same freedom or independence to pursue homosexual relationships as men, but neither have they met the same harsh punishment as homosexual men in some societies. Sadomasochism is practiced in isolation relatively rarely, though some masochists report biting, pinching, or even stun-gunning themselves as a prelude to, or as part of, masturbation. If ejaculation is onto the other person face it can be called a facial. Actual upskirt or gay fuck downblouse shots may violate privacy laws in some countries. Group sex is sexual behavior involving more than two participants. Transsexual pornography is a genre of pornography. Comic books often featured characters being tied up and tying others up, particularly in damsel in distress plots. Rape pornography features performers simulating rape. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. Diaper pornography involves performers wearing diapers, sometimes with an adult performer acting in the role of a caretaker. Sometimes one or more fingers may be inserted into the vagina to stroke its frontal wall where the G-spot may be located. A survey by the New York City Department of Health and Mental Hygiene found that heterosexual women are more likely to bareback when engaging in anal sex than homosexual and bisexual men. BDSM is a variety of erotic practices involving dominance and submission, role-playing, restraint, and other interpersonal dynamics. Lucky Pierre is slang for a person performing both receptive gay hentai and insertive anal and/or vaginal sex simultaneously during a threesome, being positioned between the two partners.