Such explicit sexual interaction is seen only rarely in public play spaces, and it is sometimes specifically banned by the rules of a party or playspace. Comic books often featured characters being tied up and tying others up, particularly in damsel in distress plots. While bondage is a very popular variation within the larger field of BDSM, it is nevertheless sometimes differentiated from the rest of this field. Sometimes special furniture is used, such as a queening stool or smotherbox. There may be more than two participants; both group sex and gang banging can be included. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. This technique may include the use of a simulacrum, gay twink porn or artificial vagina. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, and H-computer games. These scenes big tit milf may either have the cameraman directly engaging in sex or merely filming others having sex. Currently, animated television series aimed at adults are some of the most popular and critically acclaimed gay hentai forms of entertainment. They further argue that setting a discrete line between safe and not-safe activities ideologically denies consenting adults the right to evaluate risks vs rewards for themselves; that some adults will be drawn to certain activities regardless of the risk; and that BDSM play—particularly higher-risk play or edgeplay—should be treated with the same regard as extreme sports, with both respect and the demand that practitioners educate themselves and practice the higher-risk activities to decrease risk. Performers are usually clean-shaven, thinner and more effeminate than ones in mainstream gay pornography. It may be used as foreplay, or as an alternative to sexual penetration. It like associating every Christian with the zealots who cause religious wars. A few extremely flexible males can reach and stimulate their penis with their tongue or lips, and so perform autofellatio.