Drama Hardcore showed this kind of film on its film. While wearing diapers, a diaper fetishist generally experiences a comforting feeling. Typically, fisting does not involve forcing the clenched fist into the vagina or rectum; this is a practice called punching. Particularly, some pornography in this genre features butch women, who are almost never seen in mainstream pornography. Today, religions vary in their views of masturbation; some view it as a spiritually detrimental practice, some see it as not spiritually detrimental, and others take a situational view. The volume of semen that is ejaculated depends on several factors, including the male health, age, degree of sexual excitement, and the time since his last ejaculation. A heterosexual threesome may involve two men and a woman, or one man and two women - that is, two men having sex with a woman , or two women with a man. See also Gay-for-pay. Milking pornography features lactating women being milked or milking themselves . Reality and voyeur pornography, animated videos, and legally prohibited acts also influence the classification of pornography. Unlike the usual power neutral relationships and play styles commonly followed by couples, activities and relationships within a BDSM context are often characterized by the participants taking hot gay sex on complementary, but unequal roles; thus, the idea of informed consent of both the partners becomes essential. Its gain in prominence has been attributed to its depiction in the film Pecker, which horny milfs was released in 1998. Many of these activities might be based on rape. A person may be sexually penetrated multiple times simultaneously. Some people masturbate by using machines that simulate intercourse. The queening stool is also related to a smotherbox, which also allows the person under the seat to be locked in place, restrained by the neck as in a 3d hentai set of stocks. 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.