Such grounds and even the definition of pornography have differed in various historical, cultural, and national contexts. Pantyhose/Tights/Stockings pornography involves women videos gays or men dressed in pantyhose, tights, milf fuck or stockings. The queening stool is also related to a smotherbox, which also allows the person under the seat to be locked in place, restrained by the neck as in a set of stocks. Gay pornography is the representation of sexual activity between males. Ass to mouth is a slang term primarily used to describe the withdrawal of a penis from the receptive partner anus followed by the immediate insertion into the receptive partner mouth. Typically features adult, masculine men with varying degrees of muscle, body fat, and body hair, akin to beefcakes, or bears. Breast fetishism is a paraphilic sexual interest focused on female breasts . Cartoon pornography depicts illustrated or animated fictional characters in erotic and sexual situations. During anal sex, male pleasure can be particularly derived from the prostate, which can lead to an orgasm hentai movies and ejaculation. Many transgender people regard the term shemale as offensive, arguing that it mocks or shows a lack of respect towards the gender identity and gender expression of transgender individuals; in this view, the term emphasizes the biological sex of a person and neglects their gender. See also Gay-for-pay. Following the introduction of the Motion Picture Association of America film rating system, independent animation producers attempted to establish an alternative to mainstream animation. Mammary intercourse is known as titty-fucking, titfuck, or a titjob in the United States, as well as tit wank or French fuck in the United Kingdom - the latter term dating back to the 1930s; while a more jocular equivalent is a trip down mammary lane. It may occur more frequently in private situations, such as spontaneous sexual activity among three friends, or arranged in a community of like-minded swingers or planned as a once-only experience; and rarely in anonymous settings, such as at orgies or other sex parties.