Lucky Pierre is slang for a person performing both receptive and insertive anal and/or vaginal sex simultaneously during a threesome, being positioned between the two partners. Depictions of male and female masturbation are common in pornography, including gay pornography. This technique may include the use of a simulacrum, or artificial vagina. Performers are usually clean-shaven, thinner and more effeminate than ones in mainstream gay pornography. The definition clash also appears with the English definition of yuri as any gay fuck lesbian relationship, as opposed to its porn milf sexually explicit definition in Japan. Cuckold fetish pornography that involves a cuckolded husband. This fetish sometimes originates from childhood memories of needing, or of seeing another needing, to urinate. Commercialized pornography accounts for a nearly US0 billion worldwide industry for the production of various media and associated products and services. Normal quantities of ejaculate range from 1.5 to 5.0 milliliters . Heterosexual bareback sex, as opposed to sex with condoms, not only poses an increased risk lesbian hentai of STIs, but for pregnancy as well. Several hundred exclusively pegging films were produced, as well as twice as many bisexual and straight films with strap-on scenes. Starting with erotic stories and woodblock prints from before the 20th century, Japanese pornography evolved into distinct subcategories with the media that in addition of pornographic videos and magazines featuring live actors, there is exist categories of pornographic manga , pornographic computer games , and pornographic anime . A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. Bottom and submissive are widely recognized terms for those partner in the relationship or activity who are, respectively, the physically receptive or controlled participants. The work of Bruce Seven has been called reality porn, due to his lack of using scripts and asking his performers to act naturally in their own character.