Older names for a pornographic film include stag film, and lesbian hentai blue movie. Buttocks are sometimes emphasized in pornography, where they are often referred to as booty. Common positions include lying on back or face down, sitting, squatting, hot gay sex kneeling or standing. In humans, females generally have more round and voluptuous buttocks, caused by estrogen that encourages the body to store fat in the buttocks, hips, and thighs. Biological anthropologist Helen B. Today, religions vary in their views of masturbation; some view it as a spiritually detrimental practice, some see it as not spiritually detrimental, and others take a situational view. Rainbow parties were covered on The Oprah Winfrey mature milfs Show in 2003, and became the subject of a juvenile novel called Rainbow Party. Pussing: British expression for an activity involving a consenting couple where the male partner watches the woman urinate otherwise undetected in a semi-public place, usually a toilet cubicle at a pub, hotel, restaurant, theatre/cinema, office, club etc. 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 . Solo pornography recognized with AVN Awards include the All Alone series and All Natural: Glamour Solos. Many transgender people regard the term shemale as offensive, arguing that it mocks or shows a lack of respect towards the gender identity and gender expression of transgender individuals; in this view, the term emphasizes the biological sex of a person and neglects their gender. A scene where many women have sex with one man is referred to as a reverse gang-bang. The full-weight body-pressure, moisture, sex odors and darkness can be perceived as powerful sexual attractions or compulsions. Some anthropologists and sociobiologists believe that breast fetishism derives from the breasts similarity to buttocks, but instead provide sexual attraction from the front of the body. 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.