The term applies to the depiction of the act rather than the act itself, videos gays and so does not include live exhibitions like sex shows and striptease. Some women who engage in same-sex sexual activity may reject not only identifying as lesbians but as bisexual as well, while other women self-identification as lesbian may not align with their sexual orientation or sexual behavior; sexual identity is not necessarily the same as one sexual orientation or sexual behavior, due to various reasons, such as the fear of identifying their sexual orientation in a homophobic setting. A homosexual threesome would involve either three men or three women. Urolagnia is a form of salirophilia in which sexual excitement is associated with the sight or thought of urine or urination. Examples include the Girls Gone Wild and momporn Girls Who Like Girls Series. The first explicit pegging scene is believed to have been in the 1975 pornographic film The Opening of Misty Beethoven. It like associating every Christian with the zealots who cause religious wars. Stimulating the prostate from outside, via pressure on the perineum, can be pleasurable as well. Diaper pornography involves performers wearing diapers, sometimes with hentai sex an adult performer acting in the role of a caretaker. While anal sex is commonly associated with male homosexuality, research shows that not all gay males engage in anal sex and that it is not uncommon in heterosexual relationships. Commercialized pornography accounts for a nearly US0 billion worldwide industry for the production of various media and associated products and services. On May 27, 2010 the television program The Doctors discussed the topic with dozens of teens, parents, and professionals. Both forms of pornography generally contains nudity. Sex parties may be organized to enable people to engage in casual sexual activity or for swinging couples or people interested in group sex to meet, but any gathering where sexual activity is anticipated can be called a sex party.