Other objects such as ball point pens and thermometers are sometimes used, although this hentai porn practice can lead to injury and/or infection. It is typically animated pornography, as the legal age to be featured in a pornographic film in Japan is 18. Internationally, hentai is a catch-all term to describe a genre of anime and manga pornography. 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. For example, in Australia it is rated Refused Classification . The reverse of this, in which nude women interact with clothed men, is called Clothed male, naked female . Clothed male, naked female is one-sided female nudity in which one or more females are nude while one or more men are clothed. The name is a reference to gonzo journalism, in which the reporter is part of the event taking place. For much of the history of cinema and television, lesbianism was considered taboo, though since the 1960s it has increasingly become a genre in its own right. On the other hand, the masochist enjoys being hurt, humiliated, or suffering within the consensual scenario. Women who perform in lesbian pornography often do not consider themselves lesbian or bisexual. Bukkake porn milf is a sex act portrayed in pornographic films, in which several men ejaculate on a woman, or another man. Some men also enjoy anal stimulation, with fingers or otherwise, without any prostate stimulation. Real medical shots or videos may violate privacy laws in some countries. The existence of such content in commercially gay twinks available pornography is widely considered an urban legend. Detective magazines, comic books and early fetish magazines In the early 20th century, Detective magazines covertly provided a way of publishing bondage imagery. Use of the agreed safeword is seen by some as an explicit withdrawal of consent. 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.