As with most forms of sexual activity, anal sex participants risk contracting sexually transmitted infections . Matsuo used amateur actresses in his videos, and he usually traveled to their hometowns for the filming. Greater economic and social freedom allowed them gradually to be able to determine how they could form relationships and families. Crying pornography that features participating actors crying. Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a person anus, or anus and rectum, for sexual pleasure. Watersports pornography features sexual activities involving urine, such as golden showers. The terms can be complimentary or pejorative. Gonzo porn is influenced by amateur pornography, and it tends to use far fewer full-body/wide shots in favor of more close-ups . Participants usually derive pleasure from this, even though many of the practices—such as inflicting pain or humiliation or being restrained—would be unpleasant under other circumstances. This is commonly mature milfs called double anal or double stuffing. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, and H-computer games. An orgy is a gathering where guests freely engage in open and unrestrained sexual activity or group sex; and a bunga bunga orgy is an orgy in which participants have sex underwater, such as in a swimming pool or a hot tub. It is also often mixed with other fetishes in practice, such as voyeurism, denial, etc. Rough sex pornography is similar gay boy porn to pornography featuring sadomasochism, and typically features a Top who humiliates and/or degrades a Bottom while being physically violent towards them. Some BDSM practitioners prefer a code of behavior that differs from SSC and is described as risk aware consensual kink , indicating a preference for a style in which the individual responsibility of the hentai videos involved parties is emphasized more strongly, with each participant being responsible for his or her own well-being. Unlike Yaoi, Bara is normally made by actual homosexual men, for homosexual men, and tends to focus on the more realistic obstacles and challenges that come with being homosexual in Japan.