If one person is penetrated by two objects, it is generically called double penetration . Though there have been numerous gang bang pornographic films since the 1980s, they usually involved no more than half a dozen to a dozen men. Two women tapegagged and cuffed to iron bars Bondage and Discipline are two aspects of BDSM that do not seem to relate to each other because of the type of activities involved, but they have conceptual similarities, and that is why they appear jointly. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. Most bisexual porn is made by small production companies rather than gay fuck the major studios. The term applies to the depiction of the act rather than the act itself, and so does not include live exhibitions like sex shows and striptease. Evolutionary psychologists suggest that rounded buttocks may have evolved to be desirable trait because they provide a visual indication of the woman youth and fertility. Creampie scenes depart from heterosexual pornographic convention in favor of a depiction that more closely mimics sexual intercourse as performed in ordinary life; they have been called the counterimage of facials. The Silent Duck, also called Duck-Billing, is the technique often used in which the person engaging in hand insertion shapes the hand to resemble hentai sex a duck beak. The term Asiaphile is sometimes horny milfs used to describe the same phenomenon as is yellow fever . Examples of heterosexual pornographic film series featuring creampies include Cream Filled Teens and Internal Cumbustion. In Canada, Teletoon offers up its own Teletoon at Night programming block. Femdom features BDSM scenes in which the dominant partner is female. Pornography may be presented in a variety of media, including books, magazines, postcards, photographs, sculpture, drawing, painting, animation, sound recording, film, video, and video games. It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations.