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. Unlike the traditional definition of the term, in fetish usage a cuckold is complicit in their partner sexual infidelity and takes young gay porn masochistic sexual pleasure in it. Emetophilia pornography involving hentai porn vomiting and gagging. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. Insertion in pornography features women inserting various odd objects into their anus or vaginas. Sex parties may be organized to enable people to engage in casual sexual activity or for swinging couples or people interested in group sex to meet, but any gathering where sexual activity is anticipated can be called a sex party. It is suggested that much of the obscurity and the uncertainties about female ejaculation are related to mixing up these two phenomena. Going back at least as far as the Christy twins in the 1970s, depictions of incest and particularly incest between twins has been a feature of gay pornography. A somewhat controversial ejaculation control technique is to put pressure on the perineum, about halfway between the scrotum and the anus, just before ejaculating. Unlike erotic films, pornographic films contain explicit sexuality and do not claim any artistic merit. In some societies, the terms fox, plum, chick, or chicken are preferred. The concept of lesbian, to differentiate women with a shared sexual orientation, is a 20th-century construct. Guro or Gore is a genre of Japanese pornography involving blood, gore, disfiguration, violence, mutilation, urine, enemas, or feces. In more vigorous forms of fisting, such as punching or punchfisting, a fully clenched fist may be inserted and withdrawn slowly. Watersports pornography features sexual activities involving urine, big tit milf such as golden showers.