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 . Foot fetish pornography features heavy emphasis on the feet of the participants, either in combination with kissing and genital sex or in the context of acts such as trampling or crush fetishism. Dwarfs or midget pornography features performers who are dwarfs/midgets. The stigma of being gay or labeled as such has steadily eroded since the Stonewall riots began the modern American gay rights movement in 1969. Comic books often featured characters being tied up and tying others up, particularly in damsel in distress plots. The most common type of erotic spanking is administered on the bare buttocks, but can also be combined with bondage, in order to heighten sexual arousal and feelings of helplessness. Its primary goal is sexual arousal mature milfs in its audience. Transsexual hamster mobile porn porn star Wendy Williams has stated that transsexual Porn is classified as Straight Specialty. Even though the performers who perform lesbian hentai in these films typically appear on many reality websites within a short span naked celebrities of time, most of these websites claim that each of them is an amateur. As a result, little in history was documented to give an accurate description of how female homosexuality is expressed. The current record is held by videos porno gay 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. A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and their partner. Diaper pornography involves performers wearing diapers, sometimes with an adult performer acting in the role of a caretaker.