"Natural" is a very dangerous word to use about sexuality ... Our society's notions of normality are completely fake and meta-trendy, since they rely on the changing standards of superstition, religion, Christianity and gender bias to define themselves. Americans, in particular, exhibit very childish reactions to sexual practices that are new to them, much like little kids who are offered a vegetable they haven't seen before: "That's disgusting!" "But darling, you haven't even tried it!" "I don't care, I hate it, I hate it!