In general, BDSM play is usually structured such that anime hentai 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. 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. The use of the word creampie to describe such scenes originated in U. Femdom features BDSM scenes in which the dominant partner is female. A bisexual threesome may involve a man having sex with a man and a woman, the woman having sex with a man and a woman, or all three having sex with each other. Women oriented pornography is sometimes referred to as sex positive pornography. When used as an alternative to penile-vaginal penetration, the goal may be to preserve virginity or to prevent pregnancy. Threesome can also refer to a love triangle, a three-way romantic relationship. The niche popularity grew significantly in the latter half of the first decade of the 2000s. In Japanese, the term describes any type of perverse or bizarre sexual desire or act; it does not represent a genre of work. The other person may do the same during or after. The activity is done by itself or as a part of or prelude to other activities which many times involve sex. Though there have been numerous gang bang pornographic nude milfs films since the 1980s, they usually involved no more than half a dozen to a dozen men. Older names for a pornographic film include stag film, and blue movie. Works in this genre may be considered adult for any number of reasons. It contains graphic sexual activity and visible penetration. Preggo pornography features pregnant performers and may include erotic lactation as a fetish. Sadism describes sexual pleasure derived by inflicting pain, degradation, humiliation on another person or causing another person to suffer. A pornographic work is characterized as hardcore if it has hot gay sex any hardcore content, no matter how small.