Conversation with a 5 years old

I have the most joyful, energetic, willful, 5 year old son named Leo.
  1. Leo: One day I will grown up and get married
  2. Me: Yes
  3. Leo: Like Mommy and Daddy
  4. Me: Yes
  5. Leo: I can't wait, I'm going to marry my sister.
  6. Me: Hold on, pal. We gotta talk about this. You have to marry someone not in our family.
  7. Leo: okay, I'll marry Addison (his cousin)
  8. Me: okay, well, we don't have to make any final decisions on this today
  9. Leo: How old is the Earth?
  10. Me: *under my breathe so he can't hear me* what the hell dude?