Family planning

Maddox: Mama, if you will be the grandma to my kids, who will my wife be?
Me: I don't know. You will have to find her. Do you have any ideas about who she might be?
Maddox: No... Who will be the grandpa?
Me: Your daddy.
Maddox: Oh... Well, who will be the dad, then?
Me: You.
Maddox: Well, what will my dad think about that?