Typically featured are hitting, choking, name-calling and hair-pulling. This can, however, redirect semen into the bladder . Irrespective of the legal or social view of pornography, it has been used in a number of contexts. The other person may do the same during or after. Yaoi is anime or manga that features gay males . The most common type of erotic spanking nude milfs is administered on the bare buttocks, but can also be combined with bondage, in order to heighten sexual arousal and feelings of helplessness. It is also known colloquially hentai sex as gushing or squirting, although these are considered to be different phenomena in some research publications. Women that take on the roles of the giantess within this fetish often find the practice to be empowering and enjoy being worshiped. New York photographer Irving Klaw also published illustrated adventure/bondage serials by fetish artists Eric Stanton, Gene Bilbrew, Adolfo Ruiz and others. It is typically animated pornography, as the legal age to be featured in a pornographic gay bear porn film in Japan is 18. A homosexual threesome would involve either three men or three women. Many cultures describe pain as an aphrodisiac. The object or situation of interest is called the fetish; the person who has a fetish for that object/situation is a fetishist. Participants who exert sexual control over their partners are known as dominants or tops while participants who take the passive, receiving, or obedient role are known as submissives or bottoms. 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. Sometimes one or more fingers may be inserted into the vagina to stroke its frontal wall where the G-spot may be located. Among swinging couples, one of the two partners is often the driving force and the other is more passive-supportive of the addition of additional sex parties.