Studies among BDSM practitioners in the US have shown that about half of all men find the idea of bondage to be erotic; many women do as well. Because some gay men consider heterosexual men to be objects of fantasy, some gay porn producers have almost certainly described some actors as heterosexual to increase sales and publicity for their product. Whether or not licking and fondling is considered tea bagging was once debated on the Howard Stern Show. Crush pornography features objects being crushed by lesbian milfs an actress or actor, who generally plays an overtly dominant role. These are often fake. Voyeurism is the sexual interest in or practice of spying on people engaged in intimate behaviors, such as undressing, sexual activity, or other actions usually considered gay bear porn to be of a private nature. Behind the Green Door was one of the first pornographic films to feature sex between a white actress with a black actor . New swinging couples often choose a soft swap before they are comfortable with a full swap, although many couples stay soft swap for personal reasons. The introduction of the home video and Internet saw a boom in the worldwide porn industry that generates billions of dollars annually. Group sex also occurs in populations of non-human animals such as bonobo apes and chimpanzees. Some people get sexual pleasure by inserting objects, such as urethral sounds, into the urethra , a practice known as urethral play or sounding. The slave is usually strictly forbidden from placing their lips directly on the body of the dominant so the practice routinely involves them receiving much of the spray all over their face, hair and body, however, another way of doing this that applies mostly to male dominants, is to place the mouth on the head of the penis and drink the urine as it is released. See also Gay-for-pay. Key party A key party is gay hentai a form of swinger party, in which male partners place their car and house keys into a common bowl or bag on arriving. Penetration may involve use of fingers, toes, sex toys, or penises.