It naked celebrities may be used as foreplay, or as an alternative to sexual penetration. Performers are usually clean-shaven, thinner and more effeminate than ones in mainstream gay pornography. It is mutual consent that makes a clear legal and ethical distinction between BDSM and such crimes as sexual assault or domestic violence. Kinbaku means tight binding Kinbaku-bi which literally means the beauty of tight binding. This style of filming is in contrast to having a separate, third-person camera crew filming all the action. When sexual activity is centered on one of the threesome, then the activity may be described as a gang bang of the person. The interaction between tops and bottoms—where physical or mental control of the bottom is surrendered to the top—is sometimes known as power exchange, whether in the context of an encounter or a relationship. Fisting pornography features the insertion of an entire hand into a performer vagina or anus. Big Beautiful Woman is a euphemism for an overweight woman and is frequently used in the context of fat fetishism. Group sex can occur between people of all sexual orientations and genders. The rise of the Internet in the late 1990s and early 2000s similarly changed the way pornography film was distributed and furthermore complicated the censorship regimes around the world and the legal prosecution of obscenity. The hentai sex 1979 momporn U. celebrity nudes First found in softcore movies and erotic thrillers, depictions of lesbianism entered mainstream cinema in the 1980s. The work of Bruce Seven has been called reality porn, due to his lack of using scripts and asking his performers to act naturally in their own character. Using the term shemale for a transsexual woman often implies that she is working in the sex trade. Unlike the gaysex traditional definition of the term, in fetish usage a cuckold is complicit in their partner sexual infidelity and takes masochistic sexual pleasure in it. Entacle erotica describes a type of pornography most commonly found in Japan which integrates traditional pornography with elements of bestiality and a fantasy, horror, or science-fiction theme.