Hardcore pornography is pornography that depicts penetration or extreme fetish acts, or both. Sexual orientation Pornography features an increasing variety of combinations of actors by their sexual orientation such as lesbian, gay, bisexual, and transsexuals in addition to traditional heterosexual roles. Cuckold fetish pornography that involves a cuckolded husband. Particular areas and processes of the body that change during pregnancy may also become the focus of psychological investment, but nudity or sexual activity is not always essential, and in some cases actual pregnancy is not necessary to invoke arousal. Sadomasochism is practiced in isolation relatively rarely, though some masochists report biting, pinching, or even stun-gunning themselves as a prelude to, or as part of, masturbation. However, bisexual pornography is often placed near hentai porn the gay section in adult video stores, since many consumers are gay men. Throughout history, women have not had the same freedom or independence to pursue homosexual relationships as men, but neither have they met the same harsh gay movies punishment as homosexual men in some societies. Examples include the Girls Gone Wild and Girls Who Like Girls Series. In some scenes or relationships it may be impossible for consent to be withdrawn in the middle of a scene, or the bottom may have the ability to revoke consent for a relationship as a whole, but not for a particular scene. Types of anal sex can also be a part of lesbian sexual practices. The phrase buttered bun is sometimes used to refer to the owner of the orifice in question. Other fetish Bareback pornography features performers who are not wearing condoms. Since mammary intercourse is a non-penetrative sex act, the risk of passing a sexually transmitted infection that requires direct contact between the mucous membranes and pre-ejaculate or semen is greatly reduced. Femdom features BDSM scenes in which the dominant partner is female. Though there have been numerous gang bang pornographic milf xxx films since the 1980s, they usually involved no more than half a dozen to a dozen men.