The other person may do the same during or after. Cuckold fetish pornography that involves a cuckolded husband. Preggo pornography features pregnant performers and may include erotic lactation as a fetish. Some may keep their hand stationary while pumping into it with pelvic thrusts in order to simulate the motions of sexual intercourse. These actors often play the top roles but this is not always the case, such as with Kristen Bjorn and some Bel Ami models. For much of the history of cinema and television, lesbianism was considered taboo, though since the 1960s it has porn milf increasingly become a genre in its own right. A homosexual threesome would involve either three men or three women. There are number of types of sex parties: Swinger party/gathering A swinger party or partner-swapping party is a gathering at which individuals or couples in a committed relationship can engage in sexual activities with others as a recreational or social activity. The term pearl necklace is used by some because the drops lesbian hentai of semen deposited by the man resemble a necklace of translucent white pearls. Hardcore pornography is pornography that depicts penetration or extreme fetish acts, or both. 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. 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. Other fetish Bareback pornography features performers who are not wearing condoms. 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. Specific sex acts Anal Anal pornography features anal penetration with a penis, dildo, other objects, or some combination of gay twinks them. The term combines elements of the Freudian psychoanalytic fetish and the Marxist commodity fetish, and is used in the context of British, Spanish and French colonialism and imperialism and their aftereffects.