Internationally, hentai is a catch-all term to describe a genre of anime and manga pornography. In the West, masturbation in private or with a partner is generally considered a normal and healthy part of sexual enjoyment. The Girls Gone Wild series is one example. In POV porn, the shooting style is generally similar to gonzo pornography, with the person receiving sexual gratification holding the camera him or herself—aiming it down at the actress or actor who is performing the sex act. 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. 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. Top and dominant are widely recognized for those partner in the relationship or activity who are, respectively, the physically active or controlling participants. Most bisexual porn is made young gay porn by small production companies rather than the major studios. Pantyhose/Tights/Stockings pornography involves women or men dressed in pantyhose, tights, or stockings. Bear features a combination of middle-aged, hairy or overweight males. Being forced to wear diapers as a form of humiliation is sometimes a behavior encountered in sexual masochism. They may be noted for using risqué themes, graphic violence, sexuality or black comedy in a manner anime hentai that is unsuitable for younger audiences. Yuri : Featuring two grown adult women in a homosexual/lesbian relationship. Breast fetishism is a paraphilic sexual interest focused on female breasts . These actors often play the top roles but this is not always the case, such mature milfs as with Kristen Bjorn and some Bel Ami models. The primary subjects of pornographic depictions are pornographic models, who pose for still photographs, and pornographic actors or porn stars, who perform in pornographic films.