Depictions of male and female masturbation are common in pornography, including gay pornography. Body parts including fingers, tongue and momporn penis may be used for anonymous oral, gay hentai vaginal and/or anal intercourse. Gonzo porn is influenced by amateur pornography, and it tends to use far fewer full-body/wide shots in favor of more close-ups . Unlike erotic films, pornographic films contain explicit sexuality and do not claim any artistic merit. Strictly speaking, bondage means binding the partner by tying their appendages together; for example, by the use of handcuffs or by lashing their arms to an object. Using the term shemale for a transsexual woman often implies that she is working in the sex trade. This is commonly called double anal or double stuffing. The term hentai is never used in this context in Japanese. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. It is sometimes described as a sexual fantasy, by women or men, depicting an exhibitionist or physique worship scenario. Transsexual people Transman pornography features performers who were born female and who medically transitioned to male. In the 1970s, the hardcore pornography genre introduced the stereotypical cumshot scene as a central element of the hardcore gay sex video film, in which the male actor ejaculates in a way ensuring maximum visibility of the act itself. 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. Pornographic films are generally classified into sub-genres which describe the sexual fantasy which the film and actors attempt to create. For other diaper fetishists, simply wearing a diaper, the bulking feeling and crinkling sounds associated with it, is enough to cause the fetishist a form of erotic pleasure or sexual arousal. 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.