In these research publications, it is suggested that real female ejaculation is the release of a very scanty, thick, and whitish fluid from the female prostate, while the squirting or gushing shown frequently in pornography is a different phenomenon, the expulsion of clear and abundant fluid, which has been shown to be a diluted fluid from the urinary bladder. Lesbianism in erotica deals with depictions in the visual arts of lesbianism, which is the expression of female-to-female sexuality. This is commonly called double vaginal penetration or double stuffing. Studies have found that masturbation is frequent in humans of both sexes and all ages, naked milf although there gay hentai is variation. In a few relationships, it leads as far as total submission of one partner in the truest sense of the phrase total power exchange . As women, they face concerns separate from men. Top and dominant are widely recognized for those partner in the relationship or activity who are, respectively, the physically active or controlling participants. Internationally, hentai is a catch-all term to describe a genre of anime and manga pornography. The warm sensation felt when urine trickles on the body seems to give very relaxing and pleasurable feelings to the person. Works in this genre may be considered adult for any number of reasons. Women who adopt a lesbian identity share experiences that form an outlook similar to an ethnic identity: as homosexuals, they are unified by the heterosexist discrimination and potential rejection they face from their families, friends, and others as a result of homophobia. By comparison, gonzo pornography puts the camera right into the action, often with one or more of the participants both filming and performing sexual acts, without the usual separation between camera and performers seen in conventional hot gay sex porn and cinema. A study of the condom usage habits of New Zealand sex workers said that they offered various safe sex alternatives to vaginal sex to clients who refused to wear a condom.