In D/S, the Dominant is the Top and the submissive is the Bottom. Cum-shot pornography features a collection of male ejaculation scenes. 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. Erotic literature and pornographic films have been devoted to the sexual uses of glory hentai videos holes. However, the tradition of bondage magazines continues in the form of art books of bondage photographs, published by mainstream publishers such as Taschen. Interest in BDSM can range from one-time experimentation to a lifestyle. Enema pornography involves adults given enemas to others, often fake. Various groups within society have considered depictions of a sexual nature immoral, labeling them pornographic, and attempting to have them suppressed under obscenity and other laws, with varying degrees of cartoon porn comics success. Sometimes, asymmetric and often intentionally uncomfortable positions are employed to heighten the psychological impact of the bondage. As in B/D, the declaration of the Top/Bottom may be required, though sadomasochists may also play without any Power Exchange at all, with both partners equally in control of the play. Twink pornography features younger performers, and usually features young men under 30 who identify as gay or bisexual. Although macrophilia lesbian milfs literally translates to simply a lover of large, in the context of a sexual fantasy it is used to mean someone who attracted to beings larger than themselves. Guro or Gore is a genre of Japanese pornography involving blood, gore, disfiguration, violence, mutilation, urine, enemas, or feces. Masturbation has been depicted in art since prehistoric times and is mentioned and discussed in very teen gay early writings. As of 2010, they were reported to live together as a monogamous couple outside of their porn careers and want to continue working together for another 50 years. Rough sex pornography is similar to pornography featuring sadomasochism, and typically features a Top who humiliates and/or degrades a Bottom while being hot gay sex physically naked celebrities violent towards them.