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. The industry generally refers to such films as adult films, which is part of adult entertainment. As the prostate is touch-sensitive, some directly stimulate it using a well-lubricated finger or dildo inserted through the anus into the rectum. Scat or brown pornography features defecation, manipulation of feces, or consumption of feces, in reality or fantasy; a well-known example is the 2 Girls 1 Cup video. 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. Certain websites have begun providing bondage videos and photographs featuring the kidnapping roleplay, which has been largely the hallmark of detective style bondage magazines. Erotic spankings are commonly combined with other forms of sexual foreplay. Mutual masturbation foreplay The manual stimulation of each other genitals where the session eventually leads to sexual intercourse. Such works have also often been subject to censorship and other legal restraints to publication, display or possession. Gay pornography is the representation of sexual activity gay twink porn between males. Those with porn milf diaper-related paraphilias differ widely in their focus of attention. Some prefer a particular type of clothing to urinate. A facial is a term for the sexual activity in which a man ejaculates semen onto hentai porn the face of one or more sexual partners. Cartoon pornography is the portrayal of illustrated or animated fictional characters in erotic or sexual situations. The term comes from the French voyeur, one who looks. People may experience pleasure from anal sex by stimulation of the anal nerve endings, and orgasm may be achieved through anal penetration – by indirect stimulation of the prostate in men, indirect clitoral/G-spot stimulation in women, and associated sensory nerves .