By James R. Petersen, co-author of A Century of Sex

We are having a V-moment, and it's about time.

It used to be a man was expected to be knowledgeable about wine, food, stereos, sports cars, dating dilemmas, taste, etiquette, firearms, mutual funds, offshore accounts and recreational drugs. You paid for the date. She put out or not. If you liked the experience, you gave her your last name.

Sex was natural. If we talked about anatomy and the meaning of life, we would use quaint terms like third base and home plate. Then along came abstinence education, and we were essentially told to "just say no" to sex.

That crazy social change gave us lots of free time and discretionary income. But times change. On Feb. 12, 2006, an episode of Grey's Anatomy launched 1,000 lips. As she went into labor, Dr. Bailey told a male intern, "Stop looking at my vajayjay." On October 28, 2007, The New York Times ran a story about America's rush to cuteness. According to the Times, the word "vajayjay" has since shown up on 30 Rock, The Tyra Banks Show, Jimmy Kimmel and The Oprah Winfrey Show. Celebutantes and pop stars have also taken to public pubic displays, as paparazzi shots scattered across the Internet attest.

These days, the vagina is in vogue. No more "just say no." Now it's all about getting her to just say yes. YES. YESSSSS!

With that in mind, it's more important than ever that today's man is a savant on the subject. So here are some of the most crucial things you need to know about her V-spot.

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