In 1988, a sex tape caused significant damage to Rob Lowe career. The naked appearance of actress Demi Moore in the advanced stage of pregnancy on the cover of Vanity Fair magazine in 1991 marked the beginning of a period which has since seen pregnancy presented by celebrities as a glamorous state of living, while also creating a market for photographers to produce images of pregnant mothers, and for fashion stylists to introduce pregnancy styling to their business. Bukkake pornography involves a performer, usually female, onto whom several men or women ejaculate, usually on the face. Yuri : Featuring two grown adult women in a homosexual/lesbian relationship. Hentai narrow Japanese usage and broad international usage are often incompatible. Although there may be no connection between coprophilia and sadomasochism , the limited data on the former comes from studies of the latter. These styles are much closer to the style hentai videos of bondage scenes in mainstream television. In Japanese, the term describes any type of perverse or bizarre sexual desire or act; it does not represent a genre of work. These actors often play the top roles but this is not always the case, such as with Kristen Bjorn and some Bel Ami models. This type of pornography is almost exclusively hentai, as true hermaphroditic humans are not fertile and are not usually found in nature. Diaper fetishism, nappy fetishism or diaperism, is a sexual fetish in which a person feels a desire to wear or use diapers. Barebacking usually refers to a conscious and deliberate choice to forgo condoms. Rimjob pornography gay movies centers around anilingus. Additionally, the buttocks give an indication of the shape and size of the pelvis, which impacts reproductive capability. Women with women Main article: Lesbianism in erotica: Lesbianism in contemporary pornography Lesbian or girl-girl pornography features women engaged in sex together, nude milfs but is typically aimed at a male audience. Both sexes sometimes apply lubricating substances to intensify sensation.