Sometimes one or more fingers may be inserted into the vagina to stroke its frontal wall where the G-spot may be located. A variant of A2M is ATOM where a performer inserts lesbian hentai his penis directly from one recipient anus into a second recipient mouth. Bondage/BDSM Bondage pornography features performers tied up or constrained in various ways. Foot fetish pornography features heavy emphasis on the feet of the participants, either in combination with kissing and genital sex or in the context of acts such as trampling or crush fetishism. On May 27, 2010 the television program The Doctors discussed the topic with dozens of teens, parents, and professionals. Bara male homosexual hentai designed to appeal to men. Lying face down on a comfortable surface momporn such as a mattress or pillow, the penis can be rubbed against it. Examples of heterosexual pornographic film series featuring creampies include videos gays Cream Filled Teens and Internal Cumbustion. Evolutionary psychologists suggest that rounded buttocks may have evolved to be desirable trait because they provide a visual indication of the woman youth and fertility. It contains graphic sexual activity and visible penetration. Bisexual pornography is a genre of pornography which most typically depicts one woman and two men who all perform sex acts on each other. In Canada, Teletoon offers up its own Teletoon at Night programming block. Examples include the Girls Gone Wild and Girls Who Like Girls Series. The first explicit pegging scene is believed to have been in the 1975 pornographic film The Opening of Misty Beethoven. Participants who exert sexual control over their partners are known as dominants or tops while participants who take the passive, receiving, or obedient role are known as submissives or bottoms. The other person may do the same during or after. 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. If dramatic skills are not involved, a performer in a porn film may also be called a model.