There has been an increase in discussion and portrayal of masturbation in art, popular music, television, films, and literature. The Silent Duck, also called Duck-Billing, is the technique often used in which the person engaging in hand insertion shapes the hand to resemble a duck beak. These actors often play the top roles but this is not always the case, such as with Kristen Bjorn and some Bel Ami models. Women who perform in lesbian pornography often do not consider themselves lesbian or bisexual. Some aspects of the research community distinguish between female ejaculation and what is colloquially known as squirting or gushing. Participants who exert sexual control over their partners are known as dominants or tops while participants who take the passive, receiving, or obedient role are known as submissives or bottoms. The niche popularity grew significantly in the latter half of the first decade of the 2000s. The name is a reference to gonzo journalism, in which the reporter is part of the event taking place. Kurt Wild, who appeared as a bottom in Lucas Entertainment Gigolos, is married to a woman and has three hentai videos children. Concerted deployed sexual rejection exercised on the partner can be an aspect of Dominance and Submission as well. Terminology for roles varies widely within the various BDSM subcultures. The strategies and tactics that are used to smuggle one of the couple into and out of the toilet undetected are as important or almost as important as the urination. A survey by the New York City Department of Health and Mental Hygiene found that heterosexual gay boy porn women are more likely to bareback when engaging in anal sex than homosexual and bisexual men. Other fetish Bareback pornography features performers who are not wearing condoms. Bukkake is a sex act portrayed in pornographic films, in which several men big tit milf ejaculate on a woman, or another man. Transgender pornography features performers who cross-dress for sexual gratification, either for themselves or for their partners.