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. Such documents have not been recognized as being legally binding, nor are they intended to be. Foot fetishism has been defined as a pronounced sexual interest in the feet or footwear. Both sexes sometimes apply lubricating substances to intensify sensation. Diaper fetishism is totally independent from pedophilia as the wearer derives pleasure only from the diaper and/or use of it. Erotic spankings are commonly combined with other forms of sexual foreplay. Patricia Hill Collins, an African-American writer, theorizes that this is derived from a stereotype that those of black descent are promiscuous, and their buttocks are objectified by porn as a result. Although there may be gaysex no connection between coprophilia and sadomasochism , the limited data on the former comes from studies of the latter. A bisexual threesome may involve a man having sex with a man and a woman, the woman having sex with a man and a woman, or all three having hentai porn sex with each other. Cartoon pornography includes, but is not limited to, hentai and parody renditions of famous cartoons and comics. In the gay pornography industry, which uses amateurs as well as professional actors, the term gay-for-pay refers to actors labeled or believed to be straight but who engage in same-sex sexual activities for money. Lolita pornography features women who are 18 years old or slightly older, who pretend to be underage teen girls. Group sex also occurs in populations of non-human animals such as bonobo apes and chimpanzees. Diaper fetishism, nappy fetishism or diaperism, is a sexual fetish in which a person feels a desire to wear or use diapers. Medical pornography involves sexualized medical, often fake, including gynecological big tit milf pelvic examinations, rectal examinations, and pelvic or gynecological ultrasounds.