Irrespective of the legal or social view of pornography, it has been used in a number of contexts. A study of 164 males in Finland from two SM clubs found 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 horny milfs and homosexuals. In 1988, a sex tape caused significant damage to Rob Lowe career. Types of anal sex can also be a part of lesbian sexual practices. Pussing: British expression for an activity involving a consenting couple where the male partner watches the woman urinate otherwise undetected in a semi-public place, usually a toilet cubicle at a pub, hotel, restaurant, theatre/cinema, office, club etc. 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. In the 18th hentai videos and 19th centuries, some European theologians and physicians described it as heinous, deplorable, and hideous, but during the 20th century, these taboos generally declined. The phrase buttered bun is sometimes used to refer to the owner of the orifice in question. Its primary goal is sexual arousal in its audience. Normal quantities of ejaculate range from 1.5 to 5.0 milliliters . Examples of mentally oriented practices are education games, during which the dominant requires certain forms of behavior from the submissive. Examples of heterosexual pornographic film series gay fuck featuring creampies include Cream Filled Teens and Internal Cumbustion. Double penetration of the vagina, anus and mouth, can involve: Simultaneous penetration of the anus by two penises or other objects. Jerk off instruction features a performer encouraging or instructing the viewer to masturbate, often culminating in a countdown at the end of which the viewer is invited to induce orgasm.