Felching naked celebrities is a sexual practice involving the act of orally sucking semen out of the vagina or anus of one partner. The term pearl necklace is used by some because the drops of semen deposited by the man resemble a necklace of translucent white pearls. Group sex most commonly takes place in a private sex party or semi-public swinger gathering, but may also take place at massage parlors or brothels or, in some jurisdictions, at purpose-built locations such as hentai movies sex clubs. Participants who exert sexual control over their partners are known as dominants or tops while participants who take the passive, receiving, or obedient role are known as submissives or bottoms. This is commonly called double vaginal penetration or double stuffing. Pussing: British expression for an activity involving a consenting videos porno gay couple hentai tentacle porn where the male partner porn milf watches the woman urinate otherwise undetected in a semi-public place, usually a toilet cubicle at a pub, hotel, restaurant, theatre/cinema, office, club etc. Pornography may fall into more than one genre. Solo performances in gay pornography have been described in 1985 as either or both active and/or passive , whereas female solo performances are said to be exclusively passive . In humans, females generally have more round and voluptuous buttocks, caused by estrogen that encourages the body to store fat in the buttocks, hips, and thighs. Bukkake is a sex act portrayed in pornographic films, in which several men ejaculate on a woman, or another man. Common positions include lying on back or face down, sitting, squatting, kneeling or standing. Urolagnia is a form of salirophilia in which sexual excitement is associated with the sight or thought of urine or urination. It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. What seems clear from the historical record is that much of the lesbian material in pornographic texts was intended for a male readership.