The term has origins in the Greek language . Common phrases used to refer to these individuals are chicks with dicks or the derogatory term shemale, although these are generally considered pejorative among transwomen. A scene where many big tit milf women have sex with one man is referred to as a reverse gang-bang. Clothed male, naked female is one-sided female nudity in which one or more females are nude while one or more men are clothed. There are number of types of sex parties: Swinger party/gathering A swinger party or partner-swapping party is a gathering at which individuals or couples in a committed relationship can engage in sexual activities with others as a recreational or social activity. Yuri : Featuring two grown adult women in a homosexual/lesbian relationship. At the end of the evening the female partners would randomly select keys from the bowl and leave with that key owner. If one person is penetrated by two objects, it is generically called double penetration . Breast fetishism is a paraphilic sexual interest focused on female breasts . Such ejaculation can be done by mammary intercourse, or masturbation over the other person, or result from the withdrawal of the penis from a partner mouth as he is ejaculating following fellatio, irrumatio, or intercourse. Mutual masturbation, mutual manual stimulation of the genitals between partners, can be a substitute for sexual penetration. Some are aroused from wetting their diapers, others like messing their diapers. Testosterone discourages fat storage in these areas. 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. Spanking can be administered in a number of spanking positions. There is, however, no third party camera work involved. Following World War II, gay fuck during a period of social repression when governments actively persecuted homosexuals, women developed networks to socialize lesbian hentai with and educate each other.