For example, in Australia it is rated Refused Classification . People may engage in anilingus for its own sake, before anal fingering or penetration, or as part of foreplay. Hamedori is a genre of Japanese pornography in which a male adult video actor or director serves as the camera operator. Sigmund Freud considered foot binding as a form of fetishism. Pregnancy fetishism is a context where pregnancy is seen by individuals or cultures as an erotic phenomenon. Diaper pornography involves performers wearing diapers, sometimes with an adult performer acting in the role of a caretaker. Sometimes one or more fingers may be inserted into the vagina to stroke its frontal wall where the G-spot may be located. Some techniques which may work for one individual can be difficult or uncomfortable for another. The wife who enjoys cuckolding her husband is frequently called a hotwife, or a cuckoldress if the man is more submissive. Reality pornography is professionally made porn which seeks to emulate the style of amateur pornography. This industry employs thousands of performers along with support and production staff. It is typically animated pornography, as the legal age to be featured hentai porn in a pornographic film in Japan is 18. Female dominance refers to BDSM relationships and BDSM scenes in which gay movies the dominant partner is female. Though there have been numerous gang bang pornographic films since the 1980s, they usually involved no more than nude milfs half a dozen to a dozen men. The act may be carried out face to face, or head to tail, with the woman recommended to be on top if she has smaller breasts. In human sexuality, a threesome is sexual activity that involves three people at the same time. Pegging is a sexual practice in which a woman performs anal sex on a man by penetrating the man anus with a strap-on dildo. The other person may do the same during or after. The definition clash also appears with the English definition of yuri as any lesbian relationship, as opposed to its sexually explicit definition in Japan.