Group sex pornography features at least two men and two women , usually more, who all perform sex acts on each other. Internal ejaculation shots are a comparatively recent development in pornography; they are not found in early pornographic films. Macrophilia is a fascination with or a sexual fantasy anime hentai involving giants, more commonly expressed as giantesses . The activity is done by itself or as a part of or prelude to other activities which many times involve sex. In contrast, a celebrity may take the route of openly releasing the tape and benefit directly from royalties as well as indirectly from the publicity. Solo performances in gay pornography have been described in 1985 as either or both active and/or passive , whereas female solo performances are said to be exclusively passive . Sadism describes sexual pleasure derived by inflicting pain, degradation, humiliation on another person or causing another person to suffer. The actual height of the giantess within the fantasy may vary depending on the individual. Works in this momporn genre may be considered adult for any number of reasons. Tentacle erotica can be consensual, but frequently mobile porn tubes contains gay boy porn elements of non-consensual sex. They may be noted for using risqué themes, graphic violence, sexuality or black comedy in a manner that is unsuitable for younger audiences. Certain websites have begun providing bondage videos and photographs featuring the kidnapping roleplay, which has been largely the hallmark of detective style bondage magazines. It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations , government agencies, and political organizations. Arcane or occult pornography involves sexualized situations with an occult or magical tone or performers who costume themselves in keeping with the theme, for example, a male performer dressed as a wizard. 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.