Entacle erotica describes a type of pornography most commonly found in Japan which integrates traditional pornography with elements of bestiality and a fantasy, horror, or science-fiction theme. Once insertion is complete, the fingers are either clenched into a fist or kept straight. In human sexuality, a threesome is sexual activity that involves three people at the same time. A pornographic work is characterized as hardcore if it has any hardcore content, no matter how small. Sexual relations between women have been illustrated as well as narrated, but much of the written material from the early modern period has been destroyed. It contains graphic sexual activity and visible penetration. 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 bisexual men. Its primary goal is sexual horny milfs arousal in its audience. Examples of heterosexual pornographic film series featuring creampies include Cream Filled Teens and Internal Cumbustion. While anal sex is commonly associated with male homosexuality, research shows that not all gay males engage in anal sex and that it is not uncommon in heterosexual relationships. Some straight gay twink porn actors have started acting in gay porn only to be accused of being gay while others first step was to strictly do solo scenes. Sex parties may be organized to enable people to engage in casual sexual activity or for swinging couples or people interested in group sex to meet, but any gathering where sexual activity is anticipated can be called a sex party. A sub-set of vaginal fisting attempts to photograph the female cervix immediately after the fist is removed from the now-gaping vagina. Pussing: British expression for an activity involving a consenting couple where the male partner watches the woman urinate otherwise undetected in a semi-public place, usually a toilet cubicle at a pub, hotel, restaurant, hentai videos theatre/cinema, hentai porn videos office, club etc.