My kid's an expert in ... (something we oughta know)

Do you have (or know of) a kid who knows everything about a subject most grown-ups don't have a clue about?  Ever think most of the adults you know could benefit from lessons with your son or daughter?  Maybe your child is a fashion wiz, or great at design, or knows everything about investing...whatever it is, if you have a child under 14 who's wise beyond his/her years, we want to hear from you!