Body parts including fingers, tongue and penis may be used for anonymous oral, vaginal and/or hentai videos anal intercourse. Often, strong views are expressed with regard to anal sex; it is controversial in various cultures, especially with regard to religion, commonly due to prohibitions naked celebrities against anal sex among gay men or teachings about the procreative purpose of milf xxx sexual activity. Commercialized pornography accounts for a nearly US0 billion worldwide industry for the production of various media and associated products and services. There is also some evidence that pornography can be used to treat voyeurism. A somewhat controversial ejaculation control technique is to put pressure on the perineum, about halfway between the scrotum and the anus, just before ejaculating. Bisexual pornography is a genre of pornography which most typically depicts one woman and two men who all perform sex acts on each other. The prostate gland is one of the organs that contributes fluid gaysex to semen. The term applies to the depiction of the act rather than the act itself, naked celebrities and so does not include live exhibitions like sex shows and striptease. Strictly speaking, bondage means binding the partner by tying their appendages together; for example, by the use of handcuffs or by lashing their arms to an object. A common way that these are depicted in a single scene is with one woman and two men performing together. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. Most soft crush fetishists avoid being placed under the same label as hard crush fetishists, believing that crush films with larger animals give the entire group a bad label. Group sex can occur between people of all sexual orientations and genders. This may relate to fetishes such as voyeurism or cuckolding. The term lesbian is also used with regard to sexual identity or sexual behavior, regardless of sexual orientation, or as an adjective to characterize or associate nouns with female homosexuality or same-sex attraction.