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. The Girls Gone Wild series is one example. 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. In Japanese, the term describes any type of perverse or bizarre sexual desire or act; it does not represent a genre of work. Yuri : Featuring two grown adult women in a lesbian hentai homosexual/lesbian relationship. It has since become popular enough with couples to be discussed during an episode of Sex and the City. Some pornographic films use an artificial semen substitute to simulate or enhance creampie shots. Gonzo pornography is a style of pornographic film that attempts to place the viewer directly into the scene. Bra pornography involves women or men dressed in bras. While some fantasize about a giantess who is slightly taller than gay movies himself, others are interested in giantesses that are hundreds or even thousands of feet tall. Some men place both hands directly on their penis during masturbation, while others may use their free hand to fondle their testicles, nipples, or other parts of their body. Exhibitionism: Becoming noticeably milf xxx desperate or wetting oneself with the express purpose of being seen by strangers. Hentai narrow Japanese usage and broad international usage are often incompatible. Some prefer a particular type of clothing to urinate. Creampie pornography features ejaculation inside the vagina , mouth or rectum instead of the common cum shot, followed by the visible seeping or dripping of semen from the vagina, mouth or anus. Clothed female, naked male pornography features naked men and clothed women; typically, the women humiliate and abuse the men or perform fellatio and/or handjobs on the men. The mouth was the most common area to be ejaculated upon.