Reality Reality pornography refers to real or faked amateur encounters. A variant of this is known as ATOM or ATOGM where the insertive partner removes his penis from one recipient anus and inserts it into a second recipient mouth. It is mutual consent that makes a clear legal and ethical distinction between videos gays BDSM and such crimes as sexual assault or domestic violence. Although pornography has usually focused on heterosexuality, due to the prevalence of the heterosexual orientation, explicit gay material has a long history as well, which reaches back to Greek antiquity, if not to prehistory. Bisexual DVDs sell much better online than in adult video stores, possibly due to customers in stores feeling embarrassed to buy them. Failure to honor a safeword is considered serious misconduct and could even change the sexual consent situation into a crime, depending on the relevant law, since the bottom has mature milfs explicitly revoked his or her consent to any actions that follow the use of the safeword . In addition to mainstream pornography, the popularity of facials has led to creation of its own niche market, anime hentai like video series that specialize in showing the act. Saliva pornography involves salivation and saliva. The person sat upon may be in bondage, sexually submissive, or simply held down by the body-weight of the other person. Each participant may engage in any type of sex acts with one or both of the others, such as vaginal, anal or oral sex or mutual masturbation. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. The nipples are erogenous zones, and vigorous stimulation of them during masturbation usually causes the penis to become erect more quickly than it would otherwise. Mutual masturbation is a sexual act where two or more people stimulate themselves or one another sexually, usually with the hands. Especially popular in post-World War 2 Japanese culture. Women porn is often produced by women and aimed specifically at the female market - rejecting the view that men are turned on by porn but women only by a box of chocolates.