It has also been recommended as a form of foreplay or safer sex. The name is a reference to gonzo journalism, gay sex video in which the reporter is part of the event taking place. 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. The term combines elements of the Freudian psychoanalytic fetish and the Marxist commodity fetish, and is used in the context of British, Spanish and French colonialism and imperialism and their aftereffects. In general, BDSM play is usually structured such that it is possible for the consenting partner to withdraw his or her consent during a scene; for example, by using a safeword that was agreed on in advance. Pornographic films are typically categorized as either softcore or hardcore pornography. Among swinging couples, one of the two partners is often the driving force and the other is more passive-supportive of the addition of additional sex parties. Those with diaper-related paraphilias differ widely in their focus of attention. Sigmund Freud considered hentai videos foot binding as a form of fetishism. Other objects such as ball point pens and thermometers are sometimes used, although this practice can lead to injury and/or infection. 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. Interactive pornography, available in CD-ROM and DVD format, mature milfs allows the viewer to select the particular acts performed at any one time, sometimes with the camera providing a first person view. Detective magazines, comic books and early fetish magazines In the early 20th century, Detective magazines covertly provided a way of publishing bondage imagery. Some people get sexual pleasure by inserting objects, such as urethral sounds, into the urethra , a practice known as urethral play or sounding. A related term used in the genre is the term cougar, which implies an older woman as predator.