A good friend of mine (who is not an economist but who has worked with her share) shared the following:
Scene: Our kitchen this afternoon. Ten-year-old fourth grader is eating his after-school snack.
Son: Here is my explanation of the economy: when people have money,
they buy things.
Mom: That’s how economists explain it too.
Son: But they do it in a more complicated and boring way, right?
Mom: Right.
!!!
David Evans' personal blog 
This is hilarious! I think your friends son should write a book explaining Greenspan. Understanding anything he says takes me hours of analysis!