It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. Macrophilia is a young gay porn fascination with or a sexual fantasy involving giants, more commonly expressed as giantesses . For much of the history of cinema and television, lesbianism was considered taboo, though since the 1960s it has increasingly become a genre in its own right. Bukkake is a sex act portrayed in por celebrity porn nographic films, in which several men ejaculate on a woman, or another man. Commenting on why there are not as many female macrophiles, psychologist Helen Friedman theorized that because women in most societies already view men as dominant and powerful, there no need for them to fantasize about it. A pornographic work is characterized as hardcore if it has any hardcore content, no matter how small. Fisher said that perhaps, the fleshy, rounded buttocks attracted males during rear-entry intercourse. Irrespective of the legal or social view of pornography, it has been used in a number hentai videos of contexts. Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, movies, or drawings. 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. Group sex pornography features at least two men and two women , usually more, momporn who all perform sex acts on each other. To avoid soreness from this resulting friction, some may prefer to use a personal lubricant, masturbation cream or saliva during masturbation. Content featuring male bisexuality has been a growing trend since the advent of internet pornography. The loose and direct camera work often includes tight shots of the genitalia, unlike some traditional porn. Point of view pornography is adult entertainment filmed to look as if the watcher were experiencing the sex act themselves.