Wirtualna wycieczka 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. Bear features a combination of middle-aged, hairy or overweight males. Bukkake pornography involves a performer, usually female, onto whom several men or women ejaculate, usually on the face. Behind the Green Door was one of the first pornographic films to feature sex between a white actress with a black actor . Testosterone discourages fat storage in these areas. Clothed female, naked male pornography features naked men and clothed women; typically, the women humiliate and abuse the men or perform fellatio and/or handjobs on the men. Sub-genres can also be classified into the characteristics of the performers or the type of sexual activity on which it concentrates, and not necessarily on the market to which each sub-genre appeals. It is typically animated pornography, as the legal age to be featured in a pornographic film in Japan is 18. Men may also rub or massage the glans, the rim of the anal milf glans, and the frenular delta. Solo performances in gay pornography have been described in 1985 as either or both active and/or passive , whereas female solo performances are said to be exclusively passive . Specific sex acts Anal Anal pornography features anal penetration with a penis, dildo, other objects, or some combination of them. Crush pornography features objects being crushed by an actress or actor, who generally plays an overtly dominant role. Pro-am pornography is sub-genre of amateur pornography that refers to professionally made porn that features amateur actors/actresses, often appearing for the first time in a pornographic film. 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.