Insertion in pornography features women inserting various odd objects into their anus or vaginas. Some couples use a threesome as a way to develop a love triangle . Sub-genres of Japanese porn Among the various sub-genres of Japanese pornography are the following: Lolicon ロリコン: This genre involves prepubescent and adolescent girls between the aged of 6-12. Other forms of anal sex include fingering, the use of sex toys for anal penetration, oral sex performed on the anus , and pegging. In pornography, depictions of lesbian sex form a popular subgenre, directed toward a male heterosexual and female homosexual audience. Bestiality pornography involves the sexual attraction of humans to animals. Others may also use vibrators and other sexual devices more commonly associated with female masturbation. Typically features a feminine Uke, or submissive, and a masculine Seme, or dominative. However, the tradition of bondage magazines continues in the form of art books of bondage photographs, published by mainstream publishers such as Taschen. For other scenes, particularly mature milfs in established relationships, a safeword may be agreed to signify a warning rather than explicit withdrawal of consent; and a few choose not to use a safeword at all. Felching involves drinking recently ejaculated semen from the vagina or anus. Erotic literature and pornographic films have been devoted to the sexual uses of glory holes. Bukkake, Gokkun, hentai videos Omorashi, and tentacle erotica are few uniquely Japanese genres known to western viewers. Also see POV. In general, softcore pornography is pornography that does not depict explicit sexual activity, sexual penetration or extreme fetishism. Within a BDSM or D/s context, facesitting can be an especially intense form of erotic humiliation. Bareback sex is physical sexual activity, especially sexual penetration, without the use of a condom. Male masturbation may differ between males who have been circumcised and those who have not. Solo pornography features performers gay fuck masturbating.