A scene where many women have sex with one man is referred to as a reverse gang-bang. Medical pornography involves sexualized medical, often fake, including gynecological pelvic examinations, rectal examinations, and pelvic or gynecological ultrasounds. 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. Testosterone discourages fat storage in these areas. Lolita pornography videos gays caters to ephebophiles. Foot fetishism has been defined as a pronounced sexual interest in the feet or footwear. People may experience pleasure from anal sex by stimulation of the anal nerve endings, and orgasm may be achieved through anal penetration – by indirect stimulation of the prostate in men, indirect clitoral/G-spot stimulation in women, and associated sensory nerves . A related term used in the genre is the term cougar, which implies an older woman as predator. Crush pornography features objects being crushed by an actress or actor, who generally plays an overtly dominant role. Perhaps following the mature milfs example set by gay pornography, they have become a popular subgenre within heterosexual pornography since the turn of the century, featuring both vaginal and anal ejaculations. In the West, masturbation in private or with a partner is generally gay hentai considered a normal and healthy part of sexual enjoyment. Women with women Main article: Lesbianism in erotica: Lesbianism in contemporary pornography Lesbian or girl-girl pornography features women engaged in sex together, but is typically aimed at a male audience. Preggo pornography features pregnant performers and may include erotic lactation as a fetish. A celebrity can fight the release in court to maintain deniability while still enjoying the career benefits. Masturbation is the self-sexual stimulation of the genitals for sexual arousal or other sexual pleasure, usually to the point of orgasm.