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. Other objects such as ball point pens and thermometers are sometimes used, although this videos gays practice can lead to injury and/or infection. Urolagnia is a form of salirophilia in which sexual excitement is associated with the sight or thought of urine or urination. Since the 1980s, many practitioners and organizations have adopted the motto safe, sane and consensual, commonly abbreviated as SSC, which means that everything is based on safe activities, that all participants be of sufficiently sound/sane mind to consent, and that all participants do consent. Hamedori is a genre of Japanese pornography in which a male adult video actor or director serves as the camera operator. This fetish sometimes originates from childhood memories of needing, or of seeing another needing, to lesbian hentai urinate. For much of the history of cinema and television, lesbianism was considered taboo, though since the 1960s it has increasingly become a genre in its own right. Normal quantities of ejaculate range from 1.5 to 5.0 milliliters . Pornography is often distinguished from erotica, which consists of the portrayal of sexuality with high-art aspirations, focusing also on feelings and emotions, while pornography involves the depiction of acts in a sensational manner, with the entire focus on the physical act, so as to arouse quick intense reactions. Since development and pronunciation of the buttocks begins at menarche and declines with age, full buttocks are also a symbol of youth. Sadomasochism is practiced in isolation relatively rarely, though some masochists report biting, pinching, or even stun-gunning themselves as a prelude to, or as part of, masturbation. A few extremely flexible males can reach and stimulate their penis with their tongue or lips, big tit milf and so perform autofellatio. It contains graphic sexual activity and visible penetration. On May 27, 2010 the television program The Doctors discussed the topic with dozens of teens, parents, and professionals.