Examples include the Girls Gone Wild and Girls Who Like Girls Series. A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. Animal masturbation has been observed in many species, both in the wild and in captivity. Normal quantities of ejaculate range from 1.5 to 5.0 milliliters . Examples of heterosexual pornographic film series featuring creampies include Cream Filled Teens and Internal Cumbustion. Actual spying may violate privacy and/or trespassing laws in many countries. 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. Gloryhole pornography features women performing fellatio on unidentified men through a small hole made in a bathroom divider. This can, however, redirect semen into the bladder big tit milf . For much of the history of cinema and television, lesbianism was considered taboo, though since the 1960s it has increasingly become a genre in its own right. Pornography gay fuck in the early 2000s. BDSM actions can often take place during a specific period of time agreed to by both parties, referred to as play, a scene or a session. Internal ejaculations, followed by images of 3d hentai semen dripping from the anus, are sometimes depicted in bareback gay pornography, where they are referred to by the term breeding or the reverse money shot. A female dominant in a master/slave relationship is often termed a Mistress, not to be confused with the colloquial usage of mistress as a kept sexual partner without a similarly formalized power relationship. Reflective of its views on sexuality and culture, Japanese pornography delves into a wide spectrum of heterosexual, homosexual, and transgender sexual acts in addition to unique fetishes and philias. A pornographic work is characterized as hardcore if it has any hardcore content, no matter how small.