Pornography in Japan is large and intertwined business of adult entertainment with unique characteristics that readily distinguish it from western pornography. Femdom features BDSM scenes in which the dominant partner is female. Incest itself is largely taboo, and is a crime in many countries. Threesome can also refer to a love triangle, a three-way romantic relationship. Pregnancy fetishism is a context where pregnancy is seen by individuals or cultures as an erotic phenomenon. On May 27, 2010 the television program The Doctors discussed the topic with dozens of teens, parents, and professionals. A survey by the New York City Department of Health and Mental Hygiene found that heterosexual women are more likely to bareback when engaging in anal sex than homosexual and hot gay sex bisexual men. As of 2013, little analysis of this paraphilia has been reported in medical literature. Other porn milf fetish Bareback pornography features performers who are not wearing condoms. Adult animation is genre of animation geared towards adults and sometimes teens. Sometimes one or more fingers may be inserted into the vagina to stroke its frontal wall where the G-spot may be located. A sex party is a gathering at which sexual activity takes place. 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 hentai porn as trampling or crush fetishism. Transgender pornography features performers who cross-dress for sexual gratification, either for themselves or for their partners. What seems clear from the historical record is that much of the lesbian material in pornographic texts was intended for a male readership. Diaper pornography involves performers wearing diapers, sometimes with an adult performer acting in the role of a caretaker. Solo pornography recognized with AVN Awards include the All Alone series and All Natural: Glamour Solos. There may be more than two participants; both group sex and gang banging can be included.