Since mammary intercourse is a non-penetrative sex act, the risk of passing a sexually transmitted infection that requires direct contact between the mucous membranes and pre-ejaculate or semen is greatly reduced. Those with diaper-related paraphilias differ widely in their focus of attention. The phrase buttered bun is sometimes used to refer to the owner of the orifice in question. Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, movies, or drawings. In Japanese, this natural-fibre rope is known as asanawa; the Japanese vocabulary does not make a distinction between hemp and jute. Bondage websites and bondage imagery in mainstream pornography As of 2003, specialist bondage magazines were mostly displaced by the availability of bondage material on the World Wide Web, and the presence of bondage imagery in mainstream pornographic magazines such as Nugget and Hustler Taboo magazine. Bestiality is illegal in many countries. A related term used in the genre is the term cougar, which implies an older woman as predator. Snowballing or snowdropping is the human sexual practice in which one person takes someone else semen into his or her mouth and then passes it to the mouth of the other, usually through kissing. As a form of non-penetrative sex, it can be done for its own enjoyment or as foreplay. 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 hentai sex significant difference between heterosexuals and homosexuals. Rainbow party A rainbow party is an urban legend spread from the early milf fuck 2000s. Some anthropologists and sociobiologists gay movies believe that breast fetishism derives from the breasts similarity to buttocks, but instead provide sexual attraction from the front of the body. Older names for a pornographic film include stag film, and blue movie.