The celebrity porn introduction of the home video and Internet saw a boom in the worldwide porn industry that generates billions of dollars annually. 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. Because some gay men consider heterosexual porn milf men to be objects of fantasy, some gay porn producers have almost certainly described some actors as heterosexual to increase sales and publicity for their product. Some men enjoy masturbating during pegging. Individual tastes and preferences in the area of sexuality may overlap among these areas, which are discussed separately here. A 2009 study found that heterosexual male fat admirers preferred hentai movies females that were clinically overweight and rated both overweight and obese women more positively than slighter individuals. The slave is usually strictly forbidden from placing hentai porn games their lips directly on the body of the dominant so the practice routinely involves them receiving much of the spray all over their face, hair and body, however, another way of doing this that applies mostly to male dominants, is to place the mouth on the head of the penis and drink the urine as it is released. A facial is a term for the sexual activity in which a man ejaculates semen onto the face of one or more sexual partners. The term has origins in the Greek language . The Girls Gone Wild series is one example. 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 gay fuck porn and cinema. The shaft skin can also be slid gay fuck back and forth with just the index finger and thumb wrapped around the penis. Gonzo pornography is a style of pornographic film that attempts to place the viewer directly into the scene. The 1999 William Higgins production Double Czech included actual sex between the Bartok twins, as did the 2009 sequel between the Richter twins, though the Bartok brothers were described as looking utterly mortified in their scene.