Rubber pornography involves rubber, latex, and similar materials. The genre presents itself as real hot gay sex couples having real sex. During anal sex, male pleasure can be particularly derived from the prostate, which can lead to an orgasm and ejaculation. They may be noted for using risqué themes, graphic violence, sexuality or black comedy in a manner that is unsuitable for younger audiences. The preference could be barefoot, high-heels, flip flops, and so on, depending on the fetishist. Unlike the usual power neutral relationships and play styles commonly followed by couples, activities and relationships within a BDSM context are often characterized by the participants taking on complementary, but unequal roles; thus, the idea of informed consent of both the partners becomes essential. It is the most common form of sexual fetishism for otherwise non-sexual objects or body parts. This is commonly called double vaginal penetration or double stuffing. A celebrity can fight the release in court to maintain deniability while still enjoying the career benefits. In these research publications, it is suggested that real female ejaculation is the release of a very scanty, thick, and whitish fluid from the female prostate, while the squirting or gushing shown frequently in pornography is a different phenomenon, the expulsion of clear and abundant fluid, which has been shown to be a diluted fluid from the urinary bladder. Perhaps following the example set by gay pornography, they have become a popular subgenre within heterosexual hentai sex pornography since the turn of the century, featuring both vaginal and anal ejaculations. This type of pornography is almost exclusively hentai, as true hermaphroditic humans are not fertile and are not usually found in nature. Typically features adult, masculine men with varying degrees of muscle, body fat, and body hair, gay cartoon porn akin to beefcakes, or bears. Typically, fisting does not involve forcing the clenched fist into the vagina or rectum; this is a practice called punching.