Preggo pornography features pregnant performers and may include erotic lactation as a fetish. Voyeur pornography may also include shots of topless women on topless beaches who are unaware of the cameras but may legally be photographed due to the public setting. Works in this genre may be considered adult for any number of reasons. In 1988, a sex tape caused significant damage to Rob Lowe career. Internationally, hentai is a catch-all term to describe a genre of anime and manga pornography. It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. Sexual orientation Pornography features an increasing variety of combinations of actors by their sexual orientation such as lesbian, gay, bisexual, hentai porn and transsexuals in addition to traditional heterosexual momsex roles. Tentacle erotica can be consensual, but frequently contains elements of non-consensual sex. Two women tapegagged and cuffed to iron bars Bondage and Discipline are two aspects of BDSM that do not seem to relate to each other because of the type of activities involved, but they have conceptual similarities, and that is why they appear jointly. Sadomasochism is practiced in isolation relatively rarely, though some masochists report biting, pinching, or even stun-gunning themselves as a prelude to, or as part of, masturbation. Rape pornography features performers simulating rape. The phrase buttered bun is sometimes used to refer to the owner of the orifice in question. Rainbow party A rainbow party is an urban legend spread from the early 2000s. Foot fetish pornography features heavy emphasis on the feet of the participants, either in combination with kissing and genital sex or in the context of acts such as trampling or crush fetishism. Internal ejaculation gay twinks shots are a comparatively recent development in pornography; they are not found in early pornographic films. The term combines elements of the Freudian psychoanalytic fetish and the Marxist commodity fetish, and is used in the context of British, Spanish and French colonialism and imperialism and their aftereffects.