Films with risqué content commenced to be produced soon after the invention of the motion picture in the 1880s. This fetish sometimes originates from childhood memories of needing, or of seeing another needing, hentai videos to urinate. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, and H-computer games. Several hundred exclusively pegging films were produced, as well as twice as many bisexual and straight films with strap-on scenes. Stimulating the prostate from outside, via pressure on the perineum, can be pleasurable as well. Pornography in Japan is large videos gays and intertwined business of adult entertainment with unique characteristics that readily distinguish it from western pornography. 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. If this is done using penises and/or strap-on dildos, this is sometimes called the sandwich or BigMac. By Japanese law, the genitals of actors and actresses must be censored and up the mid-1990 so was the depiction of pubic hair. Many men who like trans partners of any variety, known as tranny chasers, do not necessarily identify as gay themselves. The term applies to the depiction of the act rather than the act itself, and so does not include live exhibitions like sex shows and striptease. Snuff pornography involves the actual death of any of the participants, consenting or otherwise, simulated death is not considered snuff. The inside of a smotherbox is often padded to provide support for their neck and prevent their head from moving. Shemale is a term primarily used in sex work to describe a trans woman with male genitalia combined with female secondary sex characteristics, usually including augmented female breasts, from breast augmentation and/or use of hormones. Jerk off instruction features a performer encouraging or instructing the viewer to horny milfs masturbate, often culminating in a countdown at the end of which the viewer is invited to induce orgasm.