A study of 164 males in Finland from two SM clubs found hentai porn that 18.2% had engaged in coprophilia; 3% as a sadist, 6.1% as a masochist, and 9.1% as both. 18% of heterosexuals and 17% of homosexuals in the study pool had tried coprophilia, showing no statistically significant difference between heterosexuals and homosexuals. A scene where many women have sex with one man is referred to as a reverse gang-bang. Kurt Wild, who appeared as a bottom in Lucas Entertainment Gigolos, is married to a woman and has three children. When the interest in a particular subject is obsessive, the behavior may be described as stalking. These are often fake. This genre also features male-on-male fellatio through a small hole made in a bathroom divider. The term pearl necklace is used by some because the drops of semen deposited by the man resemble momsex a necklace of translucent white pearls. Solo performances in gay pornography have been described in 1985 as either or both active and/or passive , whereas female solo performances are said to be exclusively passive . Commenting on why there are not as many female macrophiles, psychologist Helen Friedman theorized that because women in most societies already view men as dominant and powerful, there no need for them to fantasize about it. Voyeur pornography may also include shots of topless women on topless beaches who are unaware of the cameras but may legally be photographed due to the public setting. Masturbation is the self-sexual stimulation of the genitals for sexual arousal or other sexual pleasure, usually to the point of orgasm. Mammary intercourse is known as titty-fucking, titfuck, or a titjob in the United States, as well as tit wank or French fuck in the United Kingdom - the latter term dating back to the 1930s; while a more jocular equivalent is a trip down mammary lane. Works in this genre may be considered adult for any number of reasons. Bear features a combination of middle-aged, hairy or overweight males. Mutual masturbation, mutual manual stimulation of the genitals between partners, videos gays can be a substitute for sexual penetration.