Growing into it

This morning and kids and I were cuddling in my bed, when we started talking about various family relationships.

Princess: I know who your mom is, mom!
M: Really? Who?
P: It's Oma!

Not to be out done, Tag joined in.

T: When I get old, I'm going to grow into a dad.
M: That's right, if you want to be.
T: And Princess will grow into a mom.
M: That's right, if she wants to be.
P: And when I'm a mom, you'll grow into a grandma!
T: And I'll be a dad, and Princess will be a mom, and you'll be a grandma, and dad will grow into a little kid!
M: What? Won't he be a grandpa?
T: Nope. He'll just grow into a little kid.

Telling Man about that later in the day when he came home for lunch, he shook his head and wondered if he should be worried about that.