Officina - auf der The study also found that participants reacted positively to a much wider range of figures than a control group, even rating emaciated figures higher. Some anthropologists and sociobiologists believe that breast fetishism derives from the breasts similarity to buttocks, but instead provide sexual attraction from the front of the body. Portrayals of lesbians in the media suggest that society at large has been simultaneously intrigued and threatened by women who challenge feminine gender roles, and fascinated and appalled with women who are romantically involved with other women. Irrespective of the legal or social view of pornography, it has been used in a number of contexts. The loose and direct camera work often includes tight shots of the genitalia, unlike some traditional porn. Femdom celebrities sex tapes features BDSM scenes in which the dominant partner is female. Lying face down one may use the hands, one may straddle a pillow, the corner or edge of the bed, a partner leg or some scrunched-up clothing and hump the vulva and clitoris against it. Some men also enjoy anal stimulation, with fingers or otherwise, without any prostate stimulation. These styles are much closer to the style of bondage scenes in mainstream television. Lolita pornography features women who are 18 years old or slightly older, who pretend to be underage teen girls. In the gay pornography industry, which uses amateurs as well as professional actors, the term gay-for-pay refers to actors labeled or believed to be straight but who engage in same-sex sexual activities for money. The most common male masturbation technique is simply to hold the penis with a loose fist and then to move the hand up and down the shaft. 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. John Stagliano is considered to have started the gonzo pornography genre with his Buttman series of films. Contrary to the other two types, B/D does not define the Tops and Bottoms itself, and is used to describe the general activities with either partner being the receiver and the giver.