It's amazing how creative parents can become when it's time to explain the facts of life to a child, and they really get creative when it comes to the vocabulary they choose. Now, we tell our kids that an ear is an ear, a leg is a leg, an elbow is an elbow and so on. But when it comes time to explain the more private parts of the body and the facts-of-life talk, we have a hard time using the right words. Frankly, I've heard some pretty weird names for human anatomy. Words invented, I guess, by a...