Urolagnia is a form of salirophilia in which sexual excitement is associated with the sight or thought of urine or urination. It is used, for example, at fertility clinics to stimulate sperm donors. Women who hentai videos perform in lesbian pornography often do not consider hentai porn games themselves lesbian or bisexual. Hamedori is a genre of Japanese pornography in which a male adult video actor or director serves as the camera operator. What seems clear from the historical record is that much of the lesbian material in pornographic texts was intended for a male readership. Both forms of pornography generally contains nudity. The most common type of erotic spanking is administered on the bare buttocks, but can also be combined with bondage, in order to heighten sexual arousal and feelings of helplessness. For circumcised males, on whom the glans is mostly or completely uncovered, this technique creates more direct contact between the hand and the glans. In some scenes or relationships it may be impossible videos gays for consent to be withdrawn in the middle of a scene, or the bottom may have the ability to revoke consent for a relationship as a whole, but not for a particular scene. Hermaphrodite, also known as herm, refers to pornography, typically hentai, that features persons with the genitalia of both sexes. Preggo pornography features pregnant performers and may include erotic lactation as a fetish. They further argue that setting a discrete line between safe and not-safe activities ideologically denies consenting adults the right to evaluate risks vs rewards for themselves; that some adults celebrity nudes will be drawn to certain activities regardless of the risk; and that BDSM play—particularly higher-risk play or edgeplay—should be treated with the same regard as extreme sports, with both respect and the demand that practitioners educate themselves and practice the higher-risk activities to decrease risk. In the gay pornography industry, which uses amateurs as well as professional actors, the term gay-for-pay refers to actors labeled or believed to be straight but who engage momsex in same-sex sexual activities for mobile porn sites money.