Arguably the most famous example of the genre is the Taboo series. It may involve sexual attraction to women who are pregnant or appear pregnant, attraction to lactation, or attraction to particular stages of pregnancy such as impregnation or childbirth. Body parts including fingers, tongue and lesbian hentai penis may be used for anonymous oral, vaginal and/or anal intercourse. As amateurs in a single segment of a multi-part video, the actresses are typically paid only about 50,000 yen . The nipples are erogenous zones, and vigorous stimulation of them during masturbation usually causes the penis to become erect more quickly than it would otherwise. Clothed female, naked male is a genre of erotica featuring one or more nude men and one or more clothed women. In recent years, Japanese films of this genre have become more common in the USA and Europe although it still remains a small, fetish-oriented part of the adult film industry. See Gay-for-pay. In general, softcore gay fuck pornography is pornography that does not depict explicit sexual activity, sexual penetration or extreme fetishism. Especially popular in post-World War 2 Japanese culture. Sometimes, asymmetric and often intentionally uncomfortable positions are employed to heighten the psychological impact of the bondage. Other forms of anal sex include fingering, the use of sex toys for anal penetration, oral sex performed on the anus , and pegging. Not all crush fetishists are that extreme! In these cases, the appearance of an enlarged abdomen caused by obesity or overeating may be sufficient, or simply the suggestion of a protruding navel. Yiff or Yiffy pornography features Furry or anthropomorphic animals in an erotic or sexual context. Within a BDSM or D/s context, facesitting can be an especially intense form of erotic humiliation. Babysitter pornography features usually teenage girls being exploited and having taboo sex with older, male employers. Pornographic films are generally classified into momsex sub-genres which describe the sexual fantasy which the film and actors attempt to create.