Japanese rope bondage is distinguished by its use of specific katas and aesthetic rules. Bukkake pornography usually depicts numerous men having sex with one woman, with multiple, usually 10 or more, men ejaculating on the female face. With second wave feminism and growth of scholarship in women history and sexuality in the 20th century, the definition of lesbian broadened, sparking a debate about sexual desire as the major component to define what a lesbian is. It is also often mixed with other fetishes in practice, such as voyeurism, denial, etc. Strictly speaking, bondage means binding the partner by tying their appendages together; for example, by the use of handcuffs or by lashing their arms to an object. In the context of consensual erotic activities, sadism and masochism are not strictly accurate terms; there is a significant difference from the medical or psychological usage of both terms. Bestiality pornography involves the sexual attraction of humans to animals. It is sometimes described as a sexual fantasy, by women or men, hentai sex depicting an exhibitionist or physique worship scenario. One-sided male nudity can also arise when a milf fuck male disrobes as part of a male striptease. Unlike the traditional definition of the term, in fetish usage a cuckold is complicit in their partner sexual infidelity and takes masochistic gaysex sexual pleasure in it. Fisting pornography features the insertion of an entire hand into a performer vagina or anus. Cum-shot pornography features a collection of male ejaculation scenes. Boot fetishism is a sexual fetish dedicated to boots. Well-known female porn stars who expressed their pleasure in pegging their male partners include Taylor Wane, Debi Diamond, Brittany Andrews, and Monique Covét. Unlike Yaoi, Bara is normally made by actual homosexual men, for homosexual men, and tends to focus on the more realistic obstacles and challenges that come with being homosexual in Japan. Also see POV. To tea bag is a slang term for the sexual act of a man placing his scrotum in the mouth of a willing sexual partner for pleasure or onto the face or head of another person.