Pornographic films are typically categorized as either softcore or hardcore pornography. In Japan, point of view pornography is referred to as hamedori . Hentai narrow Japanese hentai porn usage and broad international usage are often incompatible. In contrast, a celebrity may take the route of openly releasing the tape and benefit directly from royalties as well as indirectly from the publicity. Works in this genre may be considered adult for any number of reasons. They signal the presence of estrogen and the presence of sufficient fat stores for pregnancy and lactation. The niche popularity grew significantly in the latter half of the first decade of the 2000s. It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. Patricia Hill Collins, an African-American writer, theorizes that this is derived from a stereotype that those of black descent are promiscuous, and their buttocks are objectified by porn as a result. Macrophilia is a fascination with or a sexual fantasy involving giants, more commonly expressed as giantesses . Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, nude milfs movies, or drawings. Pornography may fall into more than one genre. Sexual orientation Pornography features an increasing variety of combinations of actors by their sexual orientation such as lesbian, gay, bisexual, and transsexuals in addition to traditional heterosexual roles. Typically features adult, masculine men with varying degrees of muscle, body fat, and body hair, akin to beefcakes, or bears. 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. It is geared towards heterosexual men, who most typically define a threesome as such. They may regard gay cock it as an enhancing element of their sex lives or as their primary form of sexual activity.