The term soft crush refers to the more common fetish surrounding videos involving inanimate objects or small invertebrates being crushed, while the term hard crush refers to such videos involving larger animals with vertabrae, and arguably more pain-susceptible animals . 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 . Omorashi: The act of holding one own urine until the need to urinate is urgent, making another hold in their urine, or watching another person with an urgent need to urinate. Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and their partner. Stimulating the prostate from outside, via pressure on the perineum, can be pleasurable as well. In Japanese, this natural-fibre rope is known as asanawa; the Japanese vocabulary does not make a distinction between hemp and jute. Pornography in the early 2000s. Transgender pornography features performers who cross-dress for sexual gratification, either for themselves or for their partners. Dwarfs or midget pornography features performers who are dwarfs/midgets. In S/M, the Sadist is usually the Top and the Masochist the Bottom, but these roles are frequently more gay porn complicated or jumbled . Sigmund Freud considered foot binding as a form of fetishism. 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. Creampie scenes depart from heterosexual pornographic convention in favor of a depiction that more closely mimics sexual intercourse as performed in ordinary life; they have been called the counterimage of facials. The prostate gland is one of the organs that contributes fluid to semen.