Some BDSM practitioners prefer a code of behavior that differs from SSC and is described as risk aware consensual kink , indicating a preference for a style in which the individual responsibility of the involved parties is emphasized more strongly, with each participant being responsible for his or her own well-being. Some restrict a policy of panties/nipple tape for females and some allow full nudity with explicit sexual interaction allowed. Stimulating the prostate from outside, via pressure on the perineum, can be pleasurable as well. As a result, little in history was documented to give an accurate description of how female homosexuality is expressed. This technique may include the use of a simulacrum, or artificial vagina. These scenes may either have the cameraman directly engaging in sex or merely filming others having sex. In some scenes or relationships it may be impossible for consent to be withdrawn in the middle of a scene, or the bottom may have the ability to revoke consent for a relationship as a whole, but not for a particular scene. Double Stuffed , Double Vaginal , or Double Anal pornography involves the penetration of one orifice by two penises or other objects. The smotherbox is placed on a stable surface. Examples of heterosexual pornographic film series featuring creampies include Cream Filled nude milfs Teens and Internal Cumbustion. Bobbi gay hentai S. The name of the practice, when it is done in a repeated in-and-out motion, is derived from its passing resemblance to the dipping of a tea bag into a cup of hot water as a method of brewing tea. 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. Emetophilia pornography videos porno gay involving naked celebrities vomiting and gagging. It is commonly depicted in pornography, but very rarely in mainstream cinema.