Fisting pornography features the insertion of an entire hand into a performer vagina or anus. Pornography is generally classified as either softcore or hardcore pornography. A few extremely flexible males can reach and stimulate their penis with their tongue or lips, and so perform autofellatio. Other possibilities are possible, such as a man having sex with two women who are having sex with each other. The term discipline describes psychological restraining, with the use of rules and punishment to control overt behavior. This fetish sometimes originates from childhood memories of needing, or of seeing another needing, to urinate. The term hentai is never used in this context in Japanese. Currently, animated television series aimed at adults are some of the most popular and critically acclaimed forms of entertainment. Now facial cumshots are regularly portrayed in pornographic films, videos, magazines and internet web sites. A sub-set of vaginal fisting attempts to photograph the female cervix immediately after the fist is removed from the now-gaping vagina. The work of Bruce Seven has been called reality porn, due to his lack of using scripts and asking his performers to act naturally in their own character. Simultaneous penetration of the mouth and either the vagina or anus. Comic books often featured characters being tied up and tying others up, particularly in damsel in distress plots. Celebrity sex tapes are amateur or professionally-made gayporn recordings of sex acts, as performed by a celebrity and their partner. When sexual activity is centered on one of the threesome, then the activity may be described as a gang bang of the person. Bara male homosexual hentai designed to appeal to men. Since development and pronunciation of the buttocks begins at menarche and declines with age, full buttocks are also a symbol of youth. BDSM actions can often take place during a specific period of time agreed to by both parties, referred to as play, a scene or a session. Targets the male audience, but is much less popular than Yaoi.