In naked celebrities Japanese, the term describes any type of perverse or bizarre sexual desire or act; it does not represent a genre 3d hentai of work. A scene where many women have sex with one man is referred to as a reverse gang-bang. 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 mobile porn movies photographers to produce images of pregnant mothers, and for fashion stylists to introduce pregnancy styling to their business. New York photographer Irving Klaw also published illustrated adventure/bondage serials by fetish artists Eric Stanton, Gene Bilbrew, Adolfo Ruiz and others. Lesbian pornography typically features a wider range of appearances and body types than is typical of mainstream pornography. A study of the condom usage habits of New Zealand sex workers said that they offered various safe sex alternatives to vaginal sex to clients who refused to wear a condom. A person may be sexually penetrated multiple times simultaneously. Sadism describes sexual pleasure derived by inflicting pain, degradation, humiliation on another person or causing another person to suffer. Works in this genre may explore philosophical, political or social issues. These actors often play the top roles but this is not always the case, such as with Kristen Bjorn and some Bel Ami models. Creampie, also known as internal cum gay fuck shot, and, horny milfs in homosexual contexts, also known as breeding and seeding, is a slang term used in pornography free porn to describe when a male ejaculates inside his partner vagina or anus. The term bondage describes the practice of Physical restraining. Some anthropologists and sociobiologists believe that breast fetishism derives from the breasts similarity to buttocks, but instead provide sexual attraction from the front of the body. Felching is a sexual practice involving the act of orally sucking semen out of the vagina or anus of one partner.