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. The consensual momporn submission of the submissive is sometimes demonstrated to others by symbols indicating his/her belonging to the dominant, such as wearing a collar, special tattoos, piercings, a very short haircut or a bald head. Lesbian pornography typically features a wider range of appearances and body types than is typical of mainstream pornography. 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. Coprophilia , also called scatophilia or scat , is the paraphilia involving sexual arousal and pleasure from feces. Sadomasochism refers to the aspects of BDSM surrounding the exchange of physical or emotional pain. The term breast fetishism is also used to refer to cultural attention to female breasts and the sexuality they represent, with debate continuing as to whether the modern widespread fascination with breasts among heterosexual males in western societies is a sexual fetish. The activity is done by itself or as a part of or gay boy porn prelude to other activities which many times involve sex. People may also find masturbating with friends helps lift the stigma they feel surrounding the act. Some masturbate only using pressure applied to the clitoris without direct contact, for example by pressing the palm or ball of the hand against underwear or other clothing. In some creampie films, both gay and straight, intercourse and internal ejaculation are followed by performers licking up the semen anime hentai that has dripped from their bodies. Medical pornography involves sexualized medical, often fake, including gynecological pelvic examinations, rectal examinations, and pelvic or gynecological ultrasounds.