Aidan: Mom, am I four yet?
Me: No, not yet. Soon, though.
Aidan: And then, will I be five?
Me: You'll be five after you're four, but you have to be four for a year first.
Aidan: Are you four?
Me: No, I'm twenty-eight. I was four a long time ago.
Aidan: Yeah, and when you were four, I was your dad.