Following World War II, during a period of social repression when governments actively persecuted homosexuals, women developed networks to socialize with and educate each other. Female masturbation involves the stroking or rubbing of a woman vulva, especially her clitoris, with an index or middle fingers, or both. Reading or viewing pornography, sexual fantasy or other erotic stimuli may lead to a desire for sexual release such as by masturbation. Additionally, the buttocks give an indication of the shape and size of the pelvis, which impacts reproductive capability. Reality and voyeur pornography, animated videos, and legally prohibited acts also influence the classification of pornography. Buttocks are sometimes emphasized in pornography, where they are often referred to as booty. These are often fake. This type of pornography is almost exclusively hentai, as true hermaphroditic humans are not fertile and are not usually found in nature. The resulting consent and understanding is occasionally summarized in a written contract, which is an agreement of what can and cannot take place. Many times a top actor will then be sought as a bottom and the debut is often treated as a notable event or even its own release. To avoid soreness from this resulting friction, some may prefer to use a personal lubricant, masturbation cream or saliva during masturbation. This genre also features male-on-male lesbian hentai fellatio through a small hole made in a bathroom divider. Typically, gay movies its fans identify themselves as straight. Production of such films was profitable, and a number of producers specialised in their production. The term breast fetishism is also used to refer to cultural attention to female breasts and the sexuality they represent, with debate continuing as to whether the modern widespread fascination with breasts among heterosexual males in western societies is a sexual fetish. They signal the presence of estrogen and the presence of sufficient fat stores lesbian milfs for pregnancy and lactation.
