Some productions are noted for sophisticated and/or experimental storytelling and animation lesbian milfs techniques. Squirt pornography involves women ejaculating. 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. Especially popular in post-World War 2 Japanese culture. However, the tradition of bondage magazines continues in the form of art books of bondage photographs, published by mainstream videos gays publishers such as Taschen. Such explicit sexual interaction is seen only rarely in public play spaces, and it is sometimes specifically banned by the rules of a party or playspace. In the 1970s, the hardcore pornography genre introduced the stereotypical cumshot scene as a central element of the hardcore film, in which the male actor ejaculates in a way ensuring maximum visibility of the act itself. This fetish sometimes originates from childhood memories of needing, or of seeing another needing, to urinate. Crying pornography that features participating actors crying. Actual upskirt or downblouse shots may violate privacy laws in some countries. Although pornography has usually focused on heterosexuality, due to the prevalence of the heterosexual orientation, explicit gay material has a long history as well, which reaches back to Greek antiquity, if not to prehistory. The current record is held by Lisa Sparks who had sex with 919 men on October 16, 2004 in Warsaw, Poland as part of the Third Annual World Gangbang Championship and Eroticon 2004. Guro or Gore is a genre of Japanese pornography involving blood, gore, disfiguration, violence, mutilation, urine, enemas, or feces. The related term twinkle-toes, which implies that a man is effeminate, tends to be used in a derogatory manner. The term is a slang word that originated in the 3d hentai gay community and comes from the equestrian term bareback, which refers to the practice of riding a horse without a saddle. Currently, animated television series aimed at adults are some of the most popular and critically acclaimed forms of entertainment.