Transgender pornography features performers who cross-dress for sexual naked milf gratification, either for themselves or for their partners. 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. The wife who enjoys cuckolding her husband is frequently called a hotwife, or a cuckoldress if the man is more submissive. Oral sex pornography frequently features a person performing fellatio, and less frequently cunnilingus. It has also videos gays been recommended as a form of foreplay or safer sex. Macrophilia is a fascination with or a sexual fantasy involving giants, more commonly expressed as giantesses . As a form of non-penetrative sex, it can be done for its own enjoyment or as foreplay. Many cultures describe pain as an aphrodisiac. Multiple men and women Bisexual pornography features one woman and two men who all perform sex acts on each other. Examples of heterosexual pornographic film series featuring creampies include Cream Filled Teens and Internal Cumbustion. The porn industry and viewing public were shocked by the then-taboo spectacle of a white woman having sex with a black man. Tentacle erotica can be consensual, but frequently contains elements lesbian hentai of non-consensual sex. Femdom features BDSM scenes in which the dominant partner is female. If one person is penetrated by two objects, it is generically called double penetration . 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. Buttocks are sometimes emphasized in pornography, where they are often referred to as booty. Portrayals of lesbians in the media suggest that society at large has been simultaneously intrigued and threatened by women who challenge feminine gender roles, and fascinated and appalled with women who are romantically involved with other women.