For instance, Amateur Allure has a trademark shot where the sexually performing cameraman circles a handycam around the sexually performing model head. Hamedori is a genre of Japanese pornography in which a male adult video actor or director serves as the camera operator. Sex parties may be organized to enable people to engage in casual sexual activity gay hentai or for swinging couples or people interested in group sex to meet, but any gathering where sexual activity is anticipated can be called a sex party. Usually that person prefers to stage the wetting so that his/her legs become soaked with urine. Sexologist Alfred Kind suggested that the buttocks gay movies is the primary sexual presentation site in primates. Sometimes one or more fingers may be inserted into the vagina to stroke its frontal wall where the G-spot may be located. The definition clash also appears with the English definition of yuri as any lesbian relationship, as opposed to its sexually explicit definition in Japan. This can, however, redirect semen into the bladder . Related genres include: Amateur pornography originally referred only to pornography momsex produced by amateurs but now also includes professionally made pornography designed to appear as if it were amateur. This style of filming is in contrast to having a separate, third-person camera crew filming all the action. If this is done using penises and/or strap-on dildos, this is sometimes called the sandwich or BigMac. Individuals are also sometimes abbreviated when referred to in writing, so a dominant person may be referred to as a Dom for a man, and a Domme for a woman. The rise of the Internet in the late 1990s and early 2000s similarly changed the way pornography film was distributed and furthermore complicated the censorship regimes around the world and the legal prosecution of obscenity. Lesbianism has been a theme in erotic art since at least the time of ancient Rome, and many regard depictions of lesbianism to be erotic. Bisexual pornography is a genre of pornography which most typically depicts one woman and two men who all perform sex acts on each other.