Some men enjoy masturbating during pegging. The Girls Gone Wild series is one example. The current public acceptance of celebrities with sex tapes is speculated by Joe Levy, executive editor of Rolling Stone, to be due to the easy availability of pornography, as well as couples more commonly making their own tapes due to the prevalence of video cameras. A celebrity can fight the release in court to maintain deniability while still enjoying the career benefits. Mammary intercourse has sometimes been considered a perversion. Group sex also occurs in populations of non-human animals such as bonobo apes and chimpanzees. Internationally, hentai is gay hentai a catch-all term to describe a momsex genre of anime and manga pornography. The two sets of people involved often meet either randomly or arrange to meet up beforehand over the Internet. The term has origins in the Greek language . Sadomasochistic scenes sometimes reach a level that appear more extreme or cruel than other forms of BDSM—for example, when a masochist is brought to tears or is severely bruised—and is occasionally unwelcome at BDSM events or parties. The consensual submission of the submissive is sometimes demonstrated to others by symbols indicating his/her belonging to the dominant, such as wearing a collar, special tattoos, piercings, a very short haircut or a bald head. They may be noted for using risqué themes, graphic violence, sexuality or black comedy in a manner that is unsuitable for younger audiences. The mouth was the most common area to be ejaculated gay twink porn upon. Reality pornography is a genre of pornography where staged scenes, usually shot in cinéma vérité fashion, set up and precede sexual encounters. Real school shots or videos which are sexualized may violate privacy laws in some countries. Although there may be no connection between coprophilia and sadomasochism , the limited data on the former comes from studies of the latter. Today, religions vary in their views of masturbation; some view it as a spiritually detrimental practice, some see it as not spiritually detrimental, and others take a situational view.