Softcore gay pornography also exists; it at one time constituted the genre, and may be produced as beefcake pornography for heterosexual female and homosexual male consumption. Real enema shots or videos of true medical situations may violate privacy laws in some countries. The name of the practice, when it is done in a repeated in-and-out motion, is derived from its passing resemblance to the dipping of a tea bag into a cup of hot water as a method of brewing tea. 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. It is suggested that much of the obscurity and the uncertainties about female ejaculation are related to mixing up these two phenomena. The nipples are erogenous zones, and vigorous stimulation of them during masturbation usually causes the penis to become erect more quickly than it would otherwise. As a result, little in history was documented to give an accurate description of how female homosexuality is expressed. BDSM actions can often take hentai porn place during a specific period of time agreed to by both parties, referred to as momsex play, a scene or a session. Consent is the most important criterion here. It may be regarded as taboo or unnatural, and is a criminal offense in some countries, punishable by corporal or capital punishment; by contrast, people also regard anal sex as a natural and valid form of sexual activity that may be as equally fulfilling as any other desired sexual expression. Participants gay bear porn 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. Fisting pornography features the insertion of an entire hand into a performer vagina or anus. The genres of pornography are based on the type of activity featured and the category of participants, for example mateur pornography is a category of pornography that features models, actors or non-professionals performing without pay, or actors for whom this material is their only paid modeling work.