Finn and I babysat my friend's 11 month old son yesterday. I'm assuming that's what prompted this conversation I had with my 4 year old last night as we were leaving the grocery:
Finn: When I have a baby you'll have to take care of it because I'm a boy.
Me: No, because you'll be married and your wife will help you take care of the baby.
Finn: Did you get married?
Me: Yes, I'm married to your daddy.
Finn: Then you should have a baby.
Me: We do have a baby. You're our baby.
Finn: No, I'm big, so you need another baby.
Have a great day!