Detective magazines, comic books and early fetish magazines In the early 20th century, Detective magazines covertly provided a way of publishing bondage imagery. It is also known colloquially as gushing or squirting, although these are considered to be different phenomena in some research publications. A related term used in the genre is the term cougar, which implies an older mature milfs woman as predator. Irrespective of the legal videos porno gay or social view of pornography, it has been used in a number of contexts. Though there have been numerous gang bang pornographic films since the 1980s, they usually involved no more than half a dozen to a dozen men. Certain websites have begun providing bondage videos and photographs featuring the kidnapping roleplay, which has been largely the hallmark of detective style bondage magazines. Women oriented pornography is sometimes referred to as sex positive pornography. Sadomasochism is practiced in isolation relatively rarely, though some masochists report biting, pinching, or even stun-gunning themselves as a prelude to, or as part of, masturbation. Its gain in prominence has been attributed to its depiction in the film Pecker, which was released in 1998. 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 lesbian hentai the presence of bondage imagery in mainstream pornographic magazines such as Nugget and Hustler Taboo magazine. They may regard it as an enhancing element of their sex lives or as their primary form of sexual activity. Lolita pornography features women who are 18 years old or slightly older, who pretend to be underage teen girls. The naked appearance of actress Demi Moore in the advanced stage of pregnancy on the cover of Vanity Fair magazine in 1991 marked the beginning of a period which has since seen pregnancy presented by celebrities as a glamorous state of living, while also creating a market for photographers to produce images of pregnant mothers, and for fashion stylists to introduce pregnancy styling to their business.