Pro-am pornography is sub-genre of amateur pornography that refers to professionally made porn that features amateur actors/actresses, often appearing for the first time in a pornographic film. Hardcore pornography is pornography that depicts penetration or extreme fetish acts, or both. On May 27, 2010 the television program The Doctors discussed the topic with dozens of teens, parents, and professionals. Some pornographic films use an artificial semen substitute to simulate or enhance creampie milf xxx shots. 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. Compensating elements of the total dominance and submission are care and devotion complementing one another, thus facilitating stable relationships. Bondage websites and bondage imagery in mainstream pornography As of 2003, specialist bondage magazines were mostly displaced by the availability of bondage material on the World Wide Web, and the presence of bondage imagery in mainstream pornographic magazines such as Nugget and Hustler Taboo magazine. Mammary intercourse is a sex act, performed as foreplay or as non-penetrative sex, that involves the stimulation of the male penis gaysex by the female breasts and vice versa. The act may be carried out face to face, or head to tail, with the woman recommended to be on top if she has smaller breasts. Preggo pornography features pregnant performers and may include erotic lactation as a fetish. Hermaphrodite, also known as herm, refers to pornography, typically hentai, that features persons with the genitalia of both sexes. At the end of the evening the female partners would randomly select keys from the bowl and leave with that key owner. The term is typically used by the cinematographer within the narrative framework 3d hentai of a pornographic film, and since the 1970s has become a leitmotif of the hardcore genre. Fisher said that perhaps, the fleshy, rounded buttocks attracted males during rear-entry intercourse.