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. 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. They may be noted for using risqué themes, graphic violence, sexuality or black comedy in a manner that is unsuitable for younger audiences. During anal sex, male pleasure can be particularly derived from the prostate, which can lead to an orgasm and ejaculation. Pornographic films are typically categorized as either softcore or hardcore pornography. However, various groups within society considered such depictions immoral, labelling them pornographic, and attempting to have them suppressed under obscenity laws, with varying degrees of success. They may regard it as an enhancing element of their sex lives or as their primary form of sexual activity. Detective magazines, comic books and early fetish magazines In the early 20th century, Detective magazines covertly provided a way of publishing bondage imagery. Content featuring male bisexuality has been a growing trend since the advent of internet pornography. Whether or not licking and fondling is nude milfs considered tea bagging was once debated on the Howard Stern Show. Solo pornography recognized with AVN Awards include the All Alone series and All Natural: Glamour Solos. Examples of mentally oriented hentai videos practices are education games, during which the dominant requires certain forms of behavior from the submissive. There is, however, no third party gay twinks camera work involved. New York photographer Irving Klaw also published illustrated adventure/bondage serials by fetish artists Eric Stanton, Gene Bilbrew, Adolfo Ruiz and others. What seems clear from the historical record is that much of the lesbian material in pornographic texts was intended for a male readership.