Its primary goal is sexual arousal in its audience. There has been an increase in discussion and portrayal of masturbation in art, popular music, television, films, and literature. This may help them develop their orgasm, increase its pleasure, and may inspire them to masturbate on a more frequent basis. Women that take on the roles of the giantess within this fetish often find the practice to be empowering and enjoy being worshiped. A survey by the New York City Department of Health and Mental Hygiene found that heterosexual women are more likely to bareback when engaging in anal sex than homosexual and bisexual men. Hardcore pornography is pornography that depicts penetration or extreme fetish acts, or both. First gaysex found in softcore movies and erotic thrillers, depictions of lesbianism entered mainstream cinema in the 1980s. Each participant may engage in any type of sex acts with one or both of the others, such as vaginal, anal or oral sex or mutual masturbation. This can, however, redirect semen into the bladder . A homosexual threesome would involve either three men or three women. The term discipline describes psychological restraining, with the use of rules and punishment to control overt behavior. Threesome can also refer to a love triangle, a three-way romantic relationship. Animal masturbation anime hentai has been observed in many species, both in the wild and in captivity. The prostate gland is one lesbian milfs of the organs that contributes fluid to semen. Jerk off instruction features a performer encouraging or instructing the viewer to masturbate, often culminating in a countdown at the end of which the viewer is invited to induce orgasm. Pregnancy fetishism is a context where pregnancy is seen by individuals or cultures as an erotic phenomenon. The reverse of this, in which nude women interact with clothed men, is called Clothed male, naked female . The work of Bruce Seven has been called reality porn, due to his lack of using scripts and asking his performers to act naturally in their own character.