Jerk off instruction features a performer encouraging or instructing the viewer to masturbate, often culminating in a countdown at the end of which the viewer is invited to induce orgasm. Depictions of male and female masturbation are common in pornography, including gay pornography. The phrase buttered bun is sometimes used to refer to the owner of the orifice in question. Several hundred exclusively pegging films were produced, as well as twice as many bisexual and 3d hentai straight films with strap-on scenes. Foot fetish pornography features heavy emphasis on the feet of the participants, either in combination with kissing and genital sex or in the context of acts such as trampling or crush fetishism. The wife who enjoys cuckolding her husband is frequently called a hotwife, or a cuckoldress if the man is more submissive. Usually that person prefers to stage the wetting so that his/her legs become soaked with urine. A sex party is a gathering at which sexual activity takes place. Since development and pronunciation of the buttocks begins at menarche and declines with age, full buttocks are also a symbol of youth. Portrayals of gay movies lesbians in the media suggest that society at large has been simultaneously intrigued and threatened by women who challenge feminine gender roles, and fascinated and appalled with women who are romantically involved with other women. Dwarfs or midget pornography features performers who are dwarfs/midgets. Bestiality momporn is illegal in many countries. Because the viewing of such films carried a social stigma, they were viewed at brothels, adult movie theaters, stag parties, at home, in private clubs and also at night cinemas. Such explicit sexual interaction is seen only rarely in public play spaces, and it is sometimes specifically banned by the rules of a party or playspace. 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. 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.