Fisting pornography features the insertion of an entire hand into a performer vagina or anus. Technically this is a form of exhibitionism rather than group sex per se. Using the term shemale for a transsexual woman often implies that she is working in the sex trade. The consent and compliance for a sadomasochistic situation can be granted only by people who can judge the potential results. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. Not all crush fetishists are that extreme! Masturbation has been depicted in art gay hentai since prehistoric times and is mentioned and discussed in very early writings. Some restrict a policy of panties/nipple tape for females and some allow gay boy porn full nudity with explicit sexual interaction allowed. One or more of the participants may engage in autoerotic sexual activity, such as masturbation, possibly without physical contact with the other participants. There are currently no known laws forbidding the crushing of objects and insects, however the production or mature milfs trade of crush erotica involving live vertebrates is condemned by animal rights activists and is illegal in many countries, including the United States and Great Britain. 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. Sloppy seconds is a slang phrase for when a man has sexual intercourse with another person who already has received another man penis in the relevant orifice and is therefore wet or sloppy. Reality Reality pornography refers to real or faked amateur encounters. In some areas, there are laws stating it is not legally possible to consent to be killed, and elsewhere it may still be legally dubious . A common way that these are depicted in a single scene is with one woman and two men performing together. Some productions are noted for sophisticated and/or experimental storytelling and animation techniques.