In some societies, the terms fox, plum, chick, or chicken are preferred. Unlike mature milfs erotic films, pornographic films contain explicit sexuality and do not claim any artistic merit. Actual spying may violate privacy gay twinks and/or trespassing laws in many countries. Kinbaku means tight binding Kinbaku-bi which literally means the beauty of tight binding. Mammary intercourse is said by Alex Comfort to produce mutual orgasm in women with sensitive breasts , and it was one of the nine substitute exercises for penetrative sexual activities, as detailed in the Paradis Charnels of 1903. Bukkake, Gokkun, Omorashi, and tentacle erotica are few uniquely Japanese genres known to western viewers. Creampie scenes depart from heterosexual pornographic convention in favor of a depiction that more closely mimics sexual intercourse as performed in ordinary life; they have been called the counterimage of facials. In the context of consensual erotic activities, sadism and masochism are not strictly accurate terms; there is a significant difference from the medical or psychological usage of both terms. The definition clash also appears with the English definition of yuri as any lesbian relationship, as opposed to its sexually explicit definition in Japan. Mutual masturbation can be practiced by males or females in pairs or groups with or without actually touching another person as indicated by the following examples of contact versus non-contact scenarios: Non-contact mutual masturbation Two people masturbating in the presence of each other but not touching. Voyeurism: Seeing another urinate without the person knowledge either through video taping by a hidden camera, or by lurking in locations where people are urinating or are likely to have an urge to urinate. A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into hentai porn a second recipient mouth. The person sat upon may be in bondage, sexually submissive, or simply held down by the body-weight of the other person.