The loose and direct camera work often includes tight shots of the genitalia, unlike some traditional porn. A scene where many women have sex with one man is referred to as a reverse gang-bang. Some are aroused from wetting their diapers, others like messing their diapers. The existence of such content in commercially available pornography is widely considered an urban legend. Sigmund Freud considered gay twinks foot binding as a form of fetishism. Other fetish Bareback pornography features performers who are not wearing condoms. They may be noted for using risqué themes, graphic violence, sexuality or black comedy in a manner that is unsuitable for younger audiences. Contrary to the other two types, B/D does not define the Tops and Bottoms itself, and is used to describe the general activities with either partner being the receiver and the giver. If one person is penetrated by two objects, it is generically called double penetration . Its gain in prominence has been attributed to its depiction in the film Pecker, which was released in 1998. Preggo pornography features pregnant performers and may include erotic lactation as a fetish. Some people get sexual pleasure by inserting objects, such as urethral sounds, 3d hentai into the urethra , a practice known as urethral play or sounding. 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. This genre also features male-on-male fellatio through big tit milf a small hole made in a bathroom divider. Diaper fetishism is totally independent from pedophilia as the wearer derives pleasure only from the diaper and/or use of it. Solo pornography recognized with AVN Awards include the All Alone series and All Natural: Glamour Solos.