So, this morning Caleb was ruminating at the breakfast table and says this: "When I grow up, if I have a wife, and if my wife bears children, then Daddy will be a Grandpa! And you will be a Grandma!" And there you have it. We also discussed how Caleb would be an uncle and other such matters. I am glad he finally got that sorted out. :) Anyone who knows Caleb well knows how fascinated he is with correctly ordering people in his mind (as in, so-in-so is x years and has x number of children and is the sister of x, etc.) Now he has another layer to add to that thinking, I guess.