It is sometimes combined with BDSM features. 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. Matsuo used amateur actresses in his videos, and he usually traveled to their hometowns for the filming. The Silent Duck, also called Duck-Billing, is the technique often used in which the person engaging in hand insertion shapes the hand to resemble a duck beak. Softcore gay pornography also exists; it at one time constituted the genre, and may be produced as beefcake pornography for heterosexual female and homosexual male consumption. Such films continued to be produced but could only be distributed by underground channels. A survey by the New York City Department of Health and Mental Hygiene found that heterosexual women are more likely to bareback when engaging in anal sex than homosexual and bisexual men. Sadomasochism does not imply enjoyment through causing or receiving pain in other situations . 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. People may engage in anilingus for its own sake, before anal fingering or penetration, or as nude milfs part of foreplay. The term discipline describes psychological gay twinks restraining, with the use of rules and punishment to control overt behavior. This fetish sometimes originates from childhood memories of needing, or of seeing another needing, to urinate. Although pornography has hentai movies 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. As of 2013, little analysis of this paraphilia has been reported in medical literature.
