Shotacon : Similar to Lolicon, this genre involves prepubescent or under-aged boys between the ages 6–12. These actors often play the top roles but this is not always the case, such as with Kristen Bjorn and some Bel Ami models. Internal ejaculation shots are a comparatively recent development in pornography; they are not found in early pornographic films. For circumcised males, on whom the glans is mostly or completely uncovered, this technique creates more direct contact between the hand and the glans. When the interest in a particular subject is obsessive, the behavior may be described as stalking. Behind the Green Door was one of the first pornographic films to feature sex between a white actress with a black actor . There is, however, no third party camera work involved. Examples of mentally oriented practices are education games, during which the dominant requires certain forms of behavior from the submissive. Some are aroused hentai videos from wetting their momsex diapers, others like messing their diapers. Multiple men and women Bisexual pornography features one woman and two men who all perform sex acts on each other. Kurt Wild, who appeared as a bottom in Lucas Entertainment Gigolos, is married to a woman and has three children. Such ejaculation can be done by mammary intercourse, or masturbation over the other person, or result from the withdrawal of the penis from a partner mouth as he is ejaculating following fellatio, irrumatio, or intercourse. Pornographic films are typically categorized as either softcore or hardcore pornography. The first explicit pegging scene is believed to have been in the 1975 pornographic film The Opening of Misty Beethoven. As a form of gay bear porn non-penetrative sex, it can be done for its own enjoyment or as foreplay. 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.