Interracial pornographic films have experienced an explosion in popularity, becoming one of the fastest-growing and biggest-selling genres. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. It is sometimes described as a sexual fantasy, by women or men, depicting an exhibitionist or physique worship scenario. The arousal from being desperate comes from the sensation of having a full bladder. While bondage is a very popular variation within the larger field of BDSM, it is nevertheless sometimes differentiated from the rest of this field. Examples include the Girls Gone Wild and Girls Who Like Girls Series. Interracial pornography typically employs ethnic and racial stereotypes in its depiction of performers and many of interracial pornographic films still include racial stereotypes, although the segregation of actors by race has diminished considerably. Softcore gay pornography also exists; it at one time constituted the genre, and may be produced as beefcake pornography for heterosexual momsex female and homosexual male consumption. It is mutual consent that makes a clear legal and ethical distinction between BDSM and such crimes as sexual assault gay movies or domestic violence. There is also some evidence that pornography can be used to treat voyeurism. See Gay-for-pay. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. The related term twinkle-toes, which implies that a man is effeminate, tends to be used in a derogatory manner. BDSM actions can often take place during a specific period of time agreed to by both parties, referred to as play, a scene or a session. Omorashi: The act of holding one own urine until the need to urinate is urgent, making another hold in their urine, or watching another person with an urgent need to urinate. The buttocks in human females hentai porn thus contain more adipose tissue than in males, especially after puberty.