Squirt pornography involves women ejaculating. Depictions of male and female masturbation are common in pornography, including gay pornography. Mutual masturbation can be practiced by males or females in pairs or groups with or without actually touching another person as indicated by the following examples of contact versus non-contact scenarios: Non-contact mutual masturbation Two people masturbating in the presence of each other but not touching. 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 milf xxx well-being. 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. Insertion in pornography features women inserting various odd objects into their anus or vaginas. He talked to them extensively on camera so that both he and the viewer can come to know them before any sex scenes. These scenes may either have the cameraman directly engaging in sex or merely filming others having sex. A variation on this is to place the fingers and thumb on the penis as if playing a flute, and then shuttle them back and forth. As in B/D, the declaration of the Top/Bottom may be required, though sadomasochists may also play without any Power Exchange at all, with both partners equally in control of the play. When all regions of the face are included, facial cum shots comprise approximately 62% of scenes where external ejaculation occurs. Another variant of reality pornography consists of normal couples that are filmed by professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing. The term is a slang word that originated in the gay community and comes from the equestrian term bareback, which gay cock refers to the practice of riding a horse hentai movies without a saddle.