Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, movies, or drawings. There has been an increase in discussion and portrayal of masturbation in art, popular music, television, films, and literature. Multiple men and women Bisexual pornography features one woman and two men who all perform sex acts on each other. Hamedori is a genre gay twinks of Japanese pornography in which a male adult video actor horny milfs or director serves as the camera operator. BDSM communities generally welcome anyone with a non-normative streak who identifies with the community; this may include cross-dressers, extreme body mod enthusiasts, animal players, latex or rubber aficionados, and others. The actual height of the giantess within the fantasy may vary depending on the individual. Sexual orientation Pornography features an increasing variety of combinations of actors by their sexual orientation such as lesbian, gay, bisexual, and transsexuals 3d hentai in addition to traditional heterosexual roles. Solo performances in gay pornography have been described in 1985 as either or both active and/or passive , whereas female solo performances are said to be exclusively passive . Reality and voyeur pornography, animated videos, and legally prohibited acts also influence the classification of pornography. Double Stuffed , Double Vaginal , or Double Anal pornography involves the penetration of one orifice by two penises or other objects. The act may be carried out face to face, or head to tail, with the woman recommended to be on top if she has smaller breasts. On May 27, 2010 the television program The Doctors discussed the topic with dozens of teens, parents, and professionals. Solo pornography recognized with AVN Awards include the All Alone series and All Natural: Glamour Solos. Masturbation is the self-sexual stimulation of the genitals for sexual arousal or other sexual pleasure, usually to the point of orgasm. Commenting on why there are not as many female macrophiles, psychologist Helen Friedman theorized that because women in most societies already view men as dominant and powerful, there no need for them to fantasize about it.