Isaac on growing up

(Upon looking at an old picture of Isaac and being told it's him at age 2.5)
Isaac: But now I'm 4.
Me: Yes, and soon you'll be 4 and a half.
Isaac: But mama, I'm not going to be fourteen.
Me: eh?
Isaac: I'm going to go one two three four five six seven eight nine ten eleven twelve, and then I'll go back to one again, right?
Me: (lol) No sweetie, after twelve you're going to be thirteen, and then fourteen.
Isaac: ...fourteen and a half?
Me: Yes, fourteen and a half, and then you'll be fifteen.
Isaac: And sixteen and seventeen and eighteen and nineteen and twenty, and then I'll go back to one again.
Me: No, honey, you're never going to be one again. You're just going to keep growing and growing.
Isaac: I'm gonna go all the way up to one hundred!
Me: Yep, maybe!
Isaac: And then I'll be as big as the sky!