Mammary intercourse is known as titty-fucking, titfuck, or a titjob in the United States, as well as tit wank or French fuck in the United Kingdom - the latter term dating back to the 1930s; while a more jocular equivalent is a trip down mammary lane. Perhaps following the example set by gay pornography, they have become a popular subgenre within heterosexual pornography since the turn of the century, featuring both vaginal and anal ejaculations. The fantasy is typically based around one or more larger beings dominating a smaller being. At the end hentai movies of the evening the female partners would randomly select keys from the bowl and leave with that key owner. As the prostate is touch-sensitive, some directly stimulate it using a well-lubricated finger or dildo inserted through the anus into the rectum. Some are aroused from wetting their diapers, others like messing their diapers. A related term used in the genre is the term cougar, which implies an older woman as predator. 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. The videos gays consensual submission of the submissive is sometimes demonstrated to others by symbols indicating his/her belonging milf xxx to the dominant, such as wearing a collar, special tattoos, piercings, a very short haircut or a bald head. Coprophilia , also called scatophilia or scat , is the paraphilia involving sexual arousal and pleasure from feces. People may experience pleasure from anal sex by stimulation of the anal nerve endings, and orgasm may be achieved through anal penetration – by indirect stimulation of the prostate in men, indirect clitoral/G-spot stimulation in women, and associated sensory nerves . Instead, all five fingers are kept straight and held as close together as possible , then slowly inserted into a well lubricated vagina or rectum.