Heterosexual bareback sex, as opposed to sex with condoms, not only poses an increased risk of STIs, but for pregnancy as well. Omorashi: The act of holding one own urine until the need to urinate is urgent, making another hold in their urine, or watching another person with an urgent need to urinate. Comic books often featured characters being tied up and tying others up, particularly in damsel in distress plots. The sub-genres usually conform to certain conventions, and each may appeal to a particular audience. Men and women may masturbate until they are close to orgasm, stop for a while to reduce excitement, milf fuck and then resume masturbating. Participants usually derive pleasure from this, even though many of the practices—such as inflicting pain or humiliation or being restrained—would be unpleasant under other circumstances. Matsuo used amateur actresses in his videos, and he usually traveled to their hometowns for the filming. 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. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. Targets the male audience, but is much less popular than Yaoi. 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. In September 2003 the BBC reported on the videos gays new dogging craze. Sex experts have praised various techniques that the performer can use during fellatio to increase their partner pleasure. There were also a very limited number of specialist fetish magazines which featured images of bondage, such as the famous Bizarre magazine published from 1946 to 1959 by the pioneering fetish photographer John Willie, and ENEG Exotique magazine, published 1956-1959.