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. Men may also rub or massage the glans, the rim of anime hentai the glans, and the frenular delta. Women who perform in lesbian pornography often do not consider themselves lesbian or bisexual. In Canada, Teletoon offers up its own Teletoon at Night programming block. Transgender pornography features performers who cross-dress for sexual gratification, either for themselves or for their partners. Solo pornography recognized with AVN Awards include the All Alone series and All Natural: Glamour Solos. 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. Irrespective of the legal or social view of pornography, it has been used in a number of contexts. 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. In S/M, the Sadist is usually the Top and the Masochist the Bottom, but these roles are frequently more complicated or jumbled . Some aspects of the research community distinguish between female ejaculation and what is colloquially known as squirting or gushing. Throughout history, women have not had the same freedom or independence to pursue homosexual relationships as men, but neither have they gay twinks met the same harsh punishment as homosexual men in some societies. Following the introduction of the Motion Picture Association of America film rating system, independent animation producers attempted to establish an alternative to mainstream animation. For circumcised males, on whom the glans is mostly or completely uncovered, momsex this technique creates more direct contact between the hand and the glans. It is also known colloquially as gushing or squirting, although these are considered to be different phenomena in some research publications.