Women with women Main article: Lesbianism in erotica: Lesbianism in contemporary pornography Lesbian or girl-girl pornography features women engaged in sex together, but is typically aimed at a male audience. Clothed male, naked female is one-sided female nudity in which one or more females are nude while one or more men are clothed. People may experience pleasure from anal sex by stimulation of the anal nerve endings, and orgasm may be achieved through anal penetration – by indirect stimulation of the prostate in men, indirect clitoral/G-spot stimulation in women, and associated sensory nerves . What seems clear from the historical record is that much of the lesbian material in pornographic texts was intended for a male readership. It is geared towards heterosexual men, who most typically define a threesome as such. Pornographic films are typically categorized anime hentai as either softcore or hardcore pornography. Many cultures describe pain as an aphrodisiac. A study of the condom usage habits of New Zealand sex workers said mature milfs that they offered various safe sex alternatives to vaginal sex to clients who refused to wear a condom. In the gay pornography industry, which uses amateurs as well as professional actors, the term gay-for-pay refers to actors labeled or believed to be straight gay twink porn but who engage in same-sex sexual activities for money. Cum shots typically do not appear in girl-girl scenes and orgasm is normally implied by utterances, cinematic conventions, or body movement. 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. Interactive pornography, available in CD-ROM and DVD format, allows the viewer to select the particular acts performed at any one time, sometimes with the camera providing a first person view.