It is also known colloquially as gushing or squirting, although these are considered to be different phenomena in some research publications. Hamedori is a genre of Japanese pornography in which a male adult video actor or director serves as the camera operator. Yaoi is anime or manga that features gay males . 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. Spanking can be administered in a number of spanking positions. In 1988, a sex tape caused significant damage to Rob Lowe career. Many fantasies include the macrophile shrinking before a normal sized woman or keeping his or her normal height while the partner grows in size. Lolita momporn pornography features women who are 18 years old or slightly older, who pretend naked celebrities to be underage teen girls. 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. Bukkake pornography involves a performer, usually female, onto whom several men or women ejaculate, usually on the face. Barebacking usually refers to a conscious and deliberate choice to forgo condoms. It has also been recommended as a form of foreplay or safer sex. Its gain in prominence has been attributed to its depiction in the film Pecker, which was released in 1998. It is typically animated pornography, as the legal gay movies age gay male sex to be featured in a hentai videos pornographic film in Japan is 18. The term sadomasochism is derived from the words sadism and masochism . Hardcore pornography is pornography that depicts penetration or extreme fetish acts, or both. Group sex pornography features at least two men and two women , usually more, who all perform sex acts on each other. The naked appearance naked celebrities 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.