John Stagliano is considered to have started the gonzo pornography genre with his Buttman series of films. The first explicit pegging scene is believed to have been in the 1975 pornographic film The Opening of Misty Beethoven. Double Stuffed , Double Vaginal , or Double Anal pornography naked milf involves the penetration of one orifice by two penises or other objects. Since the 1980s, many practitioners and organizations have adopted the motto safe, sane and consensual, commonly abbreviated as SSC, which means that everything is based on safe activities, that all participants be of sufficiently sound/sane mind to consent, and that all participants do consent. It is also known colloquially as gushing or squirting, although these are considered to be different phenomena in some research publications. Incest pornography can feature actual relatives, but the main type of this pornography simply uses actors of similar looks to suggest family relationship. Sexual relations between women have been illustrated as well as narrated, but much of the written material from the early modern hentai videos period has been destroyed. What seems clear from the historical record is that much of the lesbian material in pornographic texts was intended for a male readership. If dramatic skills are not involved, a performer in a porn film may also be called videos gays a model. Both forms of pornography generally contains nudity. Pornography may be presented in a variety of media, including books, magazines, postcards, photographs, sculpture, drawing, painting, animation, sound recording, film, video, and video games. The full-weight body-pressure, moisture, sex odors and darkness can be perceived as powerful sexual attractions or compulsions. Mammary intercourse is a sex act, performed as foreplay or as non-penetrative sex, that involves the stimulation of the male penis by the female breasts and vice versa. A homosexual threesome would involve either three men or three women. Fisher said that perhaps, the fleshy, rounded buttocks attracted males during rear-entry intercourse.