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. The act may be carried out face to face, or head to tail, with the woman recommended to be on top if she has smaller breasts. Typically featured are hitting, choking, name-calling and hair-pulling. It is also followed by dedicated momsex industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. Adult animation is genre of animation geared towards adults and sometimes teens. If one person is penetrated by two objects, it is generically called double penetration . The term bondage describes the hentai movies practice of Physical restraining. Yuri female homosexual hentai. Both sexes sometimes apply lubricating substances to intensify sensation. The porn industry and viewing public were shocked by the then-taboo spectacle of a white woman having sex with a black man. 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 sex clubs. 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. Transsexual porn star Wendy Williams has stated that transsexual Porn is classified as Straight Specialty. For instance, Amateur Allure has a trademark shot where the sexually performing cameraman circles a handycam gay cock around the sexually performing model head. The term BDSM dates back to 1969; however, the origin of the term BDSM is unclear and is believed to have been formed either from joining the term B&D with S&M , or as a compound initialism from B&D, D&S , and S&M.