Internal ejaculations, followed by images of semen dripping from the anus, are sometimes depicted in bareback gay pornography, where they are referred to by the term breeding or the reverse money shot. After the prerequisite level of sexual stimulation has been achieved, and ejaculation becomes imminent, the male will position his penis so that the semen discharged will be deposited onto his partner face. While most tentacle erotica is animated, there are also a few live-action movies. Mutual masturbation is a sexual act where two or more people stimulate themselves or one another sexually, usually with the hands. Spanking or whipping pornography involves spanking or whipping, generally of the buttocks, with the hand or with other objects such as belts, switches, paddles, brushes, or whips. This technique may include the use of a simulacrum, or artificial vagina. In many cases, that person is also aroused by smelling body parts that have a urine scent. In pornography, depictions of lesbian sex form a popular subgenre, directed toward a male heterosexual and female homosexual audience. Some restrict a policy of panties/nipple tape for females and some allow full nudity with explicit sexual interaction allowed. Some productions are noted for sophisticated and/or experimental storytelling and animation techniques. Simultaneous penetration of the mouth and either the vagina or anus. Klaw ran an international mail-order business out of his store, Movie gay video Star News, selling cheesecake pinups and bondage/spanking photos. Pornography is generally classified as either softcore or hardcore pornography. For uncircumcised males, stimulation of the penis in this way comes from the pumping of the foreskin, in which the foreskin is held and slid up and down over the glans, which depending on foreskin length, is completely or partially covered and then uncovered in a rapid motion. Some techniques which may work for one individual can be difficult or uncomfortable for another. Strictly speaking, bondage means binding the partner by tying their appendages together; for example, by the use of handcuffs or by lashing their arms to an object.