In many cases, that person is also aroused by smelling body parts that have a urine scent. There is also some evidence that pornography can be used to treat voyeurism. Group lesbian milfs sex is sexual behavior involving more than two hentai videos participants. Real jail or prison or police station shots or videos may violate laws in some countries. However, the tradition of bondage magazines continues in the form of art books of bondage photographs, published by mainstream publishers such as Taschen. Softcore pornography generally contains nudity or partial nudity in sexually suggestive situations, but without explicit sexual activity, sexual penetration or extreme fetishism, while hardcore pornography may contain graphic sexual activity and visible penetration, including unsimulated sex scenes. This is why video stores might consider stocking transgendered subject matter in the straight section, as some straight men will have passive or active sex with another man as long as their partner appears to look like a woman to them, to some minor or major degree. The term hentai is never used in this context in Japanese. The consent and compliance for a sadomasochistic situation can be granted only by people who can judge the potential results. These agreements are binding in the sense that the parties have the expectation that the negotiated rules will be followed. Each participant may engage in any type of sex acts with one or both of the others, such as vaginal, anal or oral sex or mutual masturbation. The term is a slang word that originated in the gay cock gay community and comes from the equestrian term bareback, which refers to the practice of riding a horse without a saddle. Group sex can occur between people of all sexual orientations and genders. Shibari is a Japanese word that literally means to tie or to bind. An orgy is a gathering where guests freely engage in open and unrestrained sexual activity or group sex; and a bunga bunga orgy is an orgy in which participants have sex underwater, such as in a swimming pool or a hot tub.