Common positions include lying on back or face down, sitting, squatting, kneeling or standing. Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, movies, or drawings. Additionally, the buttocks give an indication of the shape and size of the pelvis, which impacts reproductive capability. If one person is penetrated by two objects, it is generically called double penetration . Snowballing or snowdropping is the human sexual practice in which one person takes gay movies someone else semen into his or her mouth and then passes it to the mouth of the other, usually through kissing. Portrayals of lesbians in the media suggest that society at large has been simultaneously intrigued and threatened by women who challenge feminine gender roles, and fascinated momsex and appalled with women who are romantically involved with other women. Such works have also often been subject to censorship and other legal restraints to publication, display or possession. Rainbow parties were covered on The Oprah Winfrey Show in 2003, and became the subject of a juvenile novel called Rainbow Party. 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. Crush pornography features objects being crushed by an actress or actor, who generally plays an overtly dominant role. What seems clear from the historical record is that much of the lesbian material in pornographic texts was intended hentai videos for a male readership. The term comes from the French voyeur, one who looks. 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.