Preggo pornography features milf xxx pregnant performers and may include erotic lactation gay fuck as a fetish. 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. Bear features a combination of middle-aged, hairy or overweight males. Evolutionary psychologists suggest that rounded buttocks may have evolved to be desirable trait because they provide a visual indication of the woman youth and fertility. Group sex pornography features at least two men and two women , usually more, who all perform sex acts on each other. For some people, non-penetrative sex is the primary sexual activity of choice above all others. However, various groups within society considered such depictions immoral, labelling them pornographic, and attempting to have them suppressed under obscenity laws, with varying degrees of success. There hentai movies is, however, no third party camera work involved. Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, movies, or drawings. Mutual masturbation, mutual manual stimulation of the genitals between partners, can be a substitute for sexual penetration. Hamedori is a genre of Japanese pornography in which a male adult video actor or director serves as the camera operator. Solo pornography recognized with AVN Awards include the All Alone series and All Natural: Glamour Solos. Women oriented pornography is sometimes referred to as sex positive pornography. Rainbow party A rainbow party is an urban legend spread from the early 2000s. Yaoi is anime or manga that features gay males . The term is typically used by the cinematographer within the narrative framework of a pornographic film, and since the 1970s has become a leitmotif of the hardcore genre. Diaper pornography involves performers wearing diapers, sometimes with an adult performer acting in the role of a caretaker.