The higher pay scale and profile within a production often leads to group scenes where a straight actor hentai videos only tops. Though the term anal sex most commonly means penile-anal penetration, sources sometimes use the term anal intercourse to refer exclusively to penile-anal penetration, and anal sex to refer to any form of anal sexual activity, especially between pairings as opposed to anal masturbation. Sometimes special furniture is used, such as a queening stool or smotherbox. Actors are mostly amateur; any well-known gay sex video actors in bisexual porn tend to be from the gay pornography industry. Exhibitionist pornography features performers, usually female exposing themselves in public and milf fuck spans simple flashing to public sex. Sometimes, asymmetric and often intentionally uncomfortable positions are employed to heighten the psychological impact of the bondage. These typically are leaked to the public via the Internet, with or without the celebrity consent. Given the wide range of practices, some of which may be engaged in by people who do not consider themselves as practicing BDSM, inclusion in the BDSM community or subculture is usually dependent on self-identification and shared experience. They cited the Internet and text messaging as common ways of organising meetings. The person sat upon may be in bondage, sexually submissive, or simply held down by the body-weight of the other person. In many cases, that person is also aroused by smelling body parts that have a urine scent. Others may also use vibrators and other sexual devices more commonly associated with female masturbation. Kinbaku is a Japanese style of bondage or BDSM which involves tying up the bottom using simple yet visually intricate patterns, usually with several pieces of thin rope . Others involve partners who naturally have a significant difference in size. Especially popular in post-World War 2 Japanese culture. Targets the male audience, but is much less popular than Yaoi. In recent years, Japanese films of this genre have become more common in the USA and Europe although it still remains a small, fetish-oriented part of the adult film industry.