New York photographer Irving Klaw also published illustrated adventure/bondage serials by fetish artists Eric Stanton, Gene Bilbrew, Adolfo Ruiz and others. Such works have also often been subject to censorship and other legal restraints to publication, display or possession. When used as an alternative to penile-vaginal penetration, the goal may be to preserve virginity or to prevent pregnancy. Perhaps following the example set by gay pornography, they have become a popular subgenre within heterosexual pornography since the turn of the century, featuring both vaginal and anal ejaculations. HIV is among the infections that require such direct contact and is therefore very unlikely to be transmitted via mammary intercourse. Gay pornography is the representation of sexual activity between males. This makes varying degrees of stimulation an integral part hentai videos of oral sex for many men. For some people, non-penetrative sex is the primary sexual activity of choice above all others. By comparison, gonzo pornography puts the camera right into the action, often with one or more of the participants both filming and performing sexual acts, without the usual separation between camera and performers seen in conventional porn and cinema. On the other hand, the masochist enjoys being horny milfs hurt, humiliated, gay fuck or suffering within the consensual scenario. Breast fetishism is a paraphilic sexual interest focused on female breasts . Reading or viewing pornography, sexual fantasy or other erotic stimuli may lead to a desire for sexual release such as by masturbation. The warm sensation felt when urine trickles on the body seems to give very relaxing and pleasurable feelings to the person. Following World War II, during a period of social repression when governments actively persecuted homosexuals, women developed networks to socialize with and educate each other. This type of pornography is almost exclusively hentai, as true hermaphroditic humans are not fertile and are not usually found in nature.