Several gay hentai hundred exclusively pegging films were produced, as well as twice as many bisexual gay boy porn and straight films with strap-on scenes. In modern BDSM vernacular, the queening stool allows open access to the crotch while seated. This can, however, redirect semen into the bladder . Transgender pornography features performers who cross-dress for sexual gratification, either for themselves or for their partners. 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. Sexologist Alfred Kind suggested that the buttocks is the primary sexual presentation site in primates. Films momporn with risqué content commenced to be produced soon after the invention of the motion picture in the 1880s. The use of the word creampie to describe such scenes originated in U. In some scenes or relationships it may be impossible for consent to be withdrawn in the middle of a scene, or the bottom may have the ability to revoke consent for a relationship as a whole, but not for a particular scene. The existence of such content in commercially available pornography is widely considered an urban legend. Particular areas and processes of the body that change during pregnancy may also become the focus of psychological investment, but nudity or sexual activity is not always essential, and in some cases actual pregnancy is not necessary to invoke arousal. Internal ejaculation shots are a comparatively recent development in pornography; they are not found in early pornographic films. The other person may do the same during or after. 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 . Normal quantities of ejaculate range from 1.5 to 5.0 milliliters . Macrophilia is a fascination with or a sexual fantasy involving giants, more commonly expressed as giantesses .