This fetish sometimes originates from childhood memories of needing, or of seeing another needing, to urinate. The act may be carried out face to face, or head to tail, with the woman recommended to be on top if she has smaller breasts. The reverse of this, in which nude women interact with clothed men, is anime hentai called Clothed male, naked female . As a result, gay bear porn little in history was documented to give an accurate description of how female homosexuality is expressed. Although interracial pornography theoretically can apply to depictions of sexual activity between performers of any different racial groups, the term is most commonly used for heterosexual sex acts between black and white performers. Often, strong views are expressed with regard to anal sex; it is controversial in various cultures, especially with regard to religion, commonly due momporn to prohibitions against anal sex among gay men or teachings about the procreative purpose of sexual activity. It is typically animated pornography, as the legal age to be featured in a pornographic film in Japan is 18. Men may find stimulation of the anus, rectum, and adjacent organs enjoyable. Foot fetishism has been defined as a pronounced sexual interest in the feet or footwear. Types of anal sex can also be a part of lesbian sexual practices. In general, BDSM play is usually structured such that it is possible for the consenting partner to withdraw his or her consent during a scene; for example, by using a safeword that was agreed on in advance. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. Foot fetish pornography features heavy emphasis on the feet of the participants, either in combination with kissing and genital sex or in the context of acts such as trampling or crush fetishism. Even though the performers who perform in these films typically appear on many reality websites within a short span of time, most of these websites claim that each of them is an amateur.