Unlike smothering, in facesitting the bottom partner is not deprived of air. The warm sensation felt when urine trickles on the body seems to give very relaxing and pleasurable feelings to the person. A study of 164 males in Finland from two SM clubs found that 18.2% had engaged in coprophilia; 3% as a sadist, 6.1% as a masochist, and 9.1% as both. 18% of heterosexuals and 17% of homosexuals in the study pool had tried coprophilia, showing no statistically significant difference between heterosexuals and homosexuals. Testosterone discourages fat storage in these areas. Such works have also often been subject to censorship and other legal restraints to publication, display or possession. Some may pursue fantasies that are concerned with the circumstances in which a subject may give birth, or to the conditions to which the pregnant subject may find themselves acting upon, such as approaches to mobility, sleeping, and dressing. Whether or not licking and fondling is considered tea bagging was once debated on the Howard Stern Show. Such documents have not been recognized as being legally binding, nor are they intended to be. However, gay pornography in the modern world is mostly concentrated in the making of home videos , cable broadcast and emerging video on demand and wireless markets, as well as images and movies momporn for viewing on the Internet. Being forced to wear diapers as a form of humiliation is sometimes a behavior encountered in sexual masochism. Medical pornography involves sexualized medical, often fake, including gynecological pelvic examinations, rectal examinations, and pelvic or gynecological ultrasounds. It is a matter of subjective definition whether participation of a third person without physical contact constitutes a threesome. Bra pornography involves women or men dressed in bras. Threesome or 3some pornography features one man and two women . Coprophilia , also called scatophilia or scat , is the paraphilia involving sexual arousal and pleasure from feces.