Fisting involves the insertion of one partner entire hand into a vagina or the anal cavity. The Japanese sex industry uses the term Paizuri . Making a pearl necklace lesbian milfs is one of the activities that sex workers use as safe sex alternatives for people who refuse to wear condoms. Enema pornography involves adults given enemas to others, often fake. The related term twinkle-toes, which implies that a man is effeminate, tends to be used in a derogatory manner. Buck Angel is the best-known actor in this genre. See Gay-for-pay. In addition to mainstream pornography, the popularity of facials has led to creation of its own niche market, like video series that specialize in showing the act. Real jail or prison or police station shots or videos may violate laws in some countries. The fundamental principles for the exercise of BDSM require that it should be performed with the informed consent of all involved parties. The term is a slang word that originated in the gay community and comes from the equestrian term bareback, which refers to the hentai sex practice of riding a horse without a saddle. However, the tradition of bondage magazines continues in the form of art gaysex books of bondage photographs, published by mainstream publishers such as Taschen. Transsexual porn star Wendy Williams has stated that transsexual porn is classified as Straight Specialty. Softcore pornography generally contains nudity or partial nudity in sexually suggestive situations, but without explicit sexual activity, sexual penetration or extreme fetishism, while hardcore pornography may contain graphic sexual activity and visible penetration, including unsimulated sex scenes. This is commonly called double anal or double stuffing. Strictly speaking, bondage means binding the partner by tying their appendages together; for example, by the use of handcuffs or by lashing their arms to an object. A common way that these are depicted in a single scene is with one woman and two men performing together. Targets the male audience, but is much less popular than Yaoi.
