Pornography is often distinguished from erotica, which consists of the portrayal of sexuality with high-art aspirations, focusing also on feelings and emotions, while pornography involves the depiction of acts in a sensational manner, with the entire focus on the physical act, so as to arouse quick intense reactions. Diaper pornography involves performers wearing diapers, sometimes with an adult performer acting in the role of a caretaker. The reverse of this, in which nude women interact with clothed men, is called Clothed male, naked female . Rainbow parties were covered on The Oprah Winfrey Show in 2003, and became the subject of a juvenile novel called Rainbow Party. Common positions include lying on back or face down, sitting, squatting, kneeling or standing. Sadomasochism is practiced in isolation relatively rarely, though some masochists report biting, pinching, or even stun-gunning themselves as a prelude to, or as part of, masturbation. Animal masturbation has been observed in many species, both in the wild and in captivity. The wife who enjoys cuckolding her husband is frequently called a hotwife, lesbian hentai or a cuckoldress if the man is more submissive. Cuckold fetish pornography gay movies that involves a cuckolded husband. However, bisexual pornography is often placed near the gay section in adult video stores, since many consumers are gay men. In academic discourse, racial fetishism is a postcolonialist term found in the writings of authors such as Homi K. Both sexes sometimes apply lubricating substances to intensify sensation. Oral sex pornography frequently features a person big tit milf performing fellatio, and less frequently cunnilingus. Creampie scenes depart from heterosexual pornographic convention in favor of a depiction that more closely mimics sexual intercourse as performed in ordinary life; they have been called the counterimage of facials. Target audience are teenage / young adult women. 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.