Jerk off instruction features a performer encouraging or instructing the viewer to masturbate, often culminating in a countdown at the end of which the viewer is invited to induce orgasm. The term applies to the depiction of the act rather than the act itself, and so does not include live exhibitions like sex shows and striptease. Pro-am pornography is sub-genre of amateur pornography that refers to professionally made porn that features amateur actors/actresses, often appearing for the first time in a pornographic film. The cover can have hinges or be a separate part. Bondage websites and bondage imagery in mainstream pornography As of 2003, specialist bondage magazines were mostly displaced by the availability of bondage material on the World Wide Web, and the presence of bondage imagery in mainstream pornographic magazines such as Nugget and Hustler Taboo magazine. Transsexual porn star Wendy Williams has stated that transsexual Porn is classified as Straight Specialty. Target audience are teenage / young adult hentai movies women. They may regard it as an enhancing element of their sex lives or as their primary form of sexual activity. Women oriented pornography is sometimes referred to as sex positive pornography. It is also nude milfs known colloquially as gushing or squirting, although these are considered to be naked celebrities different phenomena in some research publications. Compensating elements of the total dominance and submission gay bear porn celebrity porn are care and devotion complementing one another, thus facilitating stable relationships. Preggo pornography features pregnant performers and may include erotic lactation as a fetish. A survey by the New York City Department of Health and Mental Hygiene found that heterosexual women are more likely to bareback when engaging in anal sex than homosexual and bisexual men. Biological anthropologist Helen B. Rainbow parties were covered on The Oprah Winfrey Show in 2003, and became the subject of a juvenile novel called Rainbow Party. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist.