In general, softcore pornography is pornography that does not depict explicit sexual activity, sexual penetration or extreme fetishism. Although macrophilia literally translates to simply a gay movies lover of large, in the context of a sexual fantasy it is used to mean someone who attracted to beings larger than themselves. The Japanese sex industry uses the term Paizuri . Erotic literature and pornographic films have been devoted to the sexual uses of glory holes. Yiff or Yiffy pornography features Furry or anthropomorphic animals in an erotic or sexual context. Bestiality pornography involves the sexual attraction of humans to animals. Am Abend , one of the earliest pornographic films that have been collected at the Kinsey Institute for Research in Sex, Gender, and Reproduction, starts with a female masturbation scene. Gaping in pornography refers to scenes of anal sex with a focus on the recipient’s anus remaining open for a period of time after the erect penis or dildo is removed. Anal sex without protection of a condom is considered the riskiest form of sexual activity, and therefore health authorities such as the World Health Organization recommend safe sex practices for anal sex. They are often made out of precious woods, with leather used for the seat. It can be combined with fellatio and the woman may move her breasts up and down on the penis for an additional stimulation, usually before the man reaches orgasm. The films were financially hentai sex successful, winning AVN Awards for the best selling pornographic films of their year; however the events were effectively un-officiated and the record breaking claims often misleading. Interest in BDSM can range from one-time experimentation to a lifestyle. Challenged on two fronts – by anti-pornography feminists and by the traditional male double-standard – sex-positive feminists would sometimes seek for tactical reasons to distinguish erotica from porn - with the latter conventionally seen as both boring and disturbing. The surfacing of sex tapes momporn has become so common that some are leaked as a marketing tool to advance or establish a media career.