Simultaneous penetration of the vagina and anus. These typically are leaked to the public via the Internet, with or without the celebrity consent. In September 2003 the BBC reported on the new dogging craze. However, sex researchers and adolescent health care professionals have found no evidence for the existence of rainbow parties, and as such attribute the spread of the stories to a moral panic. Common phrases used to refer to these individuals are chicks with dicks, trannies, or shemales, although these are generally considered pejorative slurs among transwomen. The anal and rectal tissues are delicate and do not provide natural lubrication, so they can easily tear and permit disease transmission, especially hentai videos if lubricant is not used. Yuri is the lesbian equivalent. 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. Bondage is usually, but not always, a sexual practice. The other is in the top of the box to expose their face. The nipples are erogenous zones, hot gay sex and vigorous stimulation of them during masturbation usually causes the penis to become erect more quickly than it would otherwise. A sexual mobile teen porn fetish may be regarded as an enhancing element to a romantic/sexual relationship achieved in ordinary ways or as a mental disorder/disorder of sexual preference if it causes significant psychosocial distress for the person or has detrimental effects on important areas of their life. Hamedori-type videos were horny milfs produced from the beginnings of Japanese AV in the early 1980s. Pleasure for the giver during anilingus is usually based more on the principle of the act. While most tentacle erotica is animated, there are also a few live-action movies. However the genre remains a very small proportion of the pornographic DVD market; for example at porn retailer HotMovies. Masturbation involves touching, pressing, rubbing or massaging a person genital area, either with the fingers or against an object such as a pillow; inserting fingers or an object into the anus ; and stimulating the penis or vulva with an electric vibrator, which may also be inserted into the vagina or anus.