"Mama," my eight-year-old son said. "Are you as old as a fossil?"
Hmmm. I had to do some calculating. "Yes, Bubba, I am as old as a fossil. In fact, I was around to see the first Tyrannosaurus Rex hatch out of its egg."
He looked at me kind of funny. "Really, Mama? Because that T Rex had to have a mommy and daddy T Rex to make him."
Oh. Yeah. The age old "What came first, the chicken or the egg?".
I gave that a little bit of thought. "It was a mutation, Bubba. The parents of the T Rex weren't exactly T Rexes. The baby I saw was the first real T Rex."
Bubba scratched his head. "Mama. You're making this stuff up. And you're only forty-one, so you're not as old as a fossil."
Right. So much for my great story!