The 3d hentai term bondage describes the practice of Physical restraining. Preggo pornography features pregnant performers and may include erotic lactation as a fetish. 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. These actors often play the top roles but this is not always the case, such as with Kristen Bjorn and some Bel Ami models. Being forced to wear diapers as a form of humiliation is sometimes a behavior encountered in sexual masochism. Likewise, Fox Broadcasting Company has also dedicated an entire evening programming block to adult animation programs, known as Animation Domination. Diaper videos porno gay fetishism, nappy fetishism or diaperism, is a sexual fetish in which a person feels a desire to wear or use diapers. Sexual relations between women have been illustrated as well as narrated, but much of the written material from the early modern period has been destroyed. Pornographic films are typically categorized as either softcore or hardcore pornography. In the fetish cuckolding subculture, it is most common for the female to take on the sexually dominant role and the male the submissive role, however, female subs, sometimes referred to as cuckqueans, also exist. Kurt Wild, big tit milf who appeared as a bottom in Lucas Entertainment Gigolos, is married to a woman and has three children. A related term used in the genre is the term cougar, which implies an older woman as predator. Oral sex pornography frequently features a person performing fellatio, and less frequently cunnilingus. Solo pornography recognized with AVN Awards include the All Alone series and All Natural: Glamour Solos. Felching is a sexual practice involving the act of orally sucking semen out of the vagina or anus of one partner. For example, in Australia it is rated Refused Classification . Two women tapegagged and cuffed to iron bars Bondage and Discipline are two aspects of BDSM that do not seem to relate to each other because of the type of activities involved, but they have conceptual similarities, and that is why they appear jointly.