The term sadomasochism is derived from the words sadism and masochism . Fisher said that perhaps, the fleshy, rounded buttocks attracted males during rear-entry intercourse. Since the 1980s, many practitioners and organizations have adopted the motto safe, sane and consensual, commonly abbreviated as SSC, which means that everything is based on safe activities, that all participants be of sufficiently sound/sane mind to consent, and that all participants do consent. Comic books often featured characters hentai videos being tied up and tying others up, particularly in damsel in distress plots. As of 2013, little analysis of this paraphilia has been reported in medical literature. In more vigorous forms of fisting, celebrity porn such as punching or punchfisting, a fully clenched lesbian milfs fist may be inserted and withdrawn slowly. Irrespective of the legal or social view of pornography, it has been used in a hentai porno number of contexts. Foot fetish pornography features heavy emphasis on the feet of the participants, either in combination with kissing and genital sex or in the context of acts such as trampling or crush fetishism. The genres of pornography are based on the type of activity featured and the category of participants, for example mateur pornography is a category of pornography that features models, actors or non-professionals performing without pay, or actors for whom this material is their only paid modeling work. What seems clear from the historical record is that much of the lesbian material in pornographic texts was intended for a male readership. When the interest in a particular subject is obsessive, the behavior may be described as stalking. Usually that person prefers to stage the wetting so that his/her legs become soaked with urine. Some may keep their hand stationary while pumping into it with pelvic thrusts gay fuck in order to simulate the motions celebrity sex tapes of sexual intercourse. Sexual orientation Pornography features an increasing variety of combinations of actors by their sexual orientation such as lesbian, gay, bisexual, and transsexuals in addition to traditional heterosexual roles.