In 1988, a porn milf sex tape caused significant damage to Rob Lowe career. Group sex pornography features at least two men and two women , usually more, who all perform sex acts on each other. 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. Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, movies, or drawings. The use of the word creampie to describe such scenes originated in U. In humans, females generally have more round and voluptuous buttocks, caused by estrogen that encourages the body to store fat in the buttocks, hips, and thighs. For circumcised males, on whom the glans is mostly or completely uncovered, this technique creates more direct contact between the hand and the glans. The term bondage describes the practice of Physical restraining. The term BDSM dates back to 1969; however, the origin of the term BDSM is unclear and is believed to have been formed either from joining the term B&D with S&M , or as a compound initialism from B&D, D&S , and S&M. Other fetish Bareback pornography features performers who anime hentai are not wearing condoms. Solo pornography recognized with AVN videos gays Awards include the All Alone series and All Natural: Glamour Solos. Some straight actors have started acting in gay porn only to be accused of being gay while others first step was to strictly do solo scenes. Among swinging couples, one of the two partners is often the driving force and the other is more passive-supportive of the addition of additional sex parties. While anal sex is commonly associated with male homosexuality, research shows that not all gay males engage in anal sex and that it is not uncommon in heterosexual relationships. Double Stuffed , Double Vaginal , or Double Anal pornography involves the penetration of one orifice by two penises or other objects. Diaper fetishism, nappy fetishism or diaperism, is a sexual fetish in which a person feels a desire to wear or use diapers.