Animal masturbation has been observed in many species, both in the wild and in captivity. The definition clash also appears with the English definition of yuri as any lesbian relationship, as opposed to its sexually explicit definition in Japan. Clothes wetting: The person is sexually aroused by wetting one clothing or observing another person doing so. 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. Kinbaku means tight binding Kinbaku-bi which literally means the beauty of tight binding. 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. A somewhat controversial ejaculation control technique is to put pressure on the perineum, about halfway between the scrotum and the anus, just before ejaculating. Multiple men and women Bisexual pornography features one woman and two men who all perform sex acts on each other. Sexual relations between women have been illustrated as well as narrated, but much of the written material from the early modern period has been destroyed. Female ejaculation is the expulsion of fluid by the paraurethral ducts through and around the human female urethra during or before an orgasm. The porn industry gay twinks and viewing public were shocked by the then-taboo spectacle of a white woman having sex with a black man. In some scenes or relationships it may be impossible for consent to be withdrawn in the middle of a scene, or the bottom may have the ability to revoke consent for a relationship as a whole, but not for a particular scene.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 name is a reference to gonzo journalism, in which the reporter is part of the event taking hentai videos place. Many milf fuck cultures describe pain as an aphrodisiac. 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.