They may be videos gays noted for using risqué themes, graphic violence, sexuality or black comedy in a manner that is unsuitable for younger audiences. 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. Lolita pornography caters to ephebophiles. In the 18th and 19th centuries, some European theologians and physicians described it as heinous, deplorable, and hideous, but during the 20th century, these taboos generally declined. These styles are much closer to the style of bondage scenes in mainstream television. Some are aroused from wetting their diapers, others like messing anime hentai their diapers. Being forced to wear diapers as a form of humiliation is sometimes a behavior encountered in sexual masochism. Scat or brown pornography features defecation, manipulation of feces, or consumption of feces, in reality or fantasy; a well-known example is the 2 Girls 1 Cup video. Cartoon pornography depicts illustrated or animated fictional characters in erotic and sexual situations. Some aspects of the research momporn community distinguish between female ejaculation and what is colloquially known as squirting or gushing. The primary subjects of pornographic depictions are pornographic models, who pose for still photographs, and pornographic actors or porn stars, who perform in pornographic films. Medical pornography involves sexualized medical, often fake, including gynecological pelvic examinations, rectal examinations, and pelvic or gynecological ultrasounds. The term comes from the French voyeur, one who looks. Works in this genre may explore philosophical, political or social issues. 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. A heterosexual threesome may involve two men and a woman, or one man and two women - that is, two men having sex with a woman , or two women with a man.