The act may be carried out face to face, or head to tail, with the woman recommended to be on top if gay hentai she has smaller breasts. In the West, masturbation in private or with a partner is generally considered a normal and healthy part of sexual enjoyment. Works in this genre may be considered adult for any number of reasons. The term is typically used by the cinematographer within the narrative framework of a pornographic film, and since the 1970s has become videos gays a leitmotif of the hardcore genre. In S/M, the Sadist is usually the Top and the Masochist the Bottom, but these roles are frequently more complicated or jumbled . Urolagnia is a form of salirophilia in which sexual excitement is associated with the sight or thought of urine or urination. Interactive pornography, available in CD-ROM and DVD format, allows the viewer to select the particular acts performed at any one time, sometimes with the camera providing a first person view. Multiple men and women Bisexual pornography features one woman and two men who all perform sex acts on each other. Typically featured are hitting, choking, name-calling and nude milfs hair-pulling. Femdom features BDSM scenes in which the dominant partner is female. There are number of types of sex parties: Swinger party/gathering A swinger party or partner-swapping party is a gathering at which individuals or couples in a committed relationship can engage in sexual activities with others as a recreational or social activity. Cum shots typically do not appear in girl-girl scenes and orgasm is normally implied by utterances, cinematic conventions, or body movement. Group sex pornography features at least two men and two women , usually more, who all perform sex acts on each other. Many transgender people regard the term shemale as offensive, arguing that it mocks or shows a lack of respect towards the gender identity and gender expression of transgender individuals; in this view, the term emphasizes the biological sex of a person and neglects their gender.