Until the 20th century the female orgasm was woefully misunderstood. While aspects of it still require demystification, it's no longer taboo to speak of it and discuss the fascinating discoveries of the last century. Not to mention searching for answers to our most intimate questions. Questions like, can a woman achieve the big O just by thinking about it? And why isn't there Viagra pill for women? Take a few minutes to test your female orgasm smarts.