Not sure if I remember the words exactly, but the conversation in the car this week went something like this:
Kyle: Mom, what happens if Dad dies before you do.
Mom: Well, I don't like to think about it, but we would be okay, I guess.
Kyle: Then I could marry you.
Mom: Well no, we don't marry our moms.
Kyle: Then who am I going to marry?
Mom: Well, I'm sure you will find a nice girl to marry someday when you are a grown-up.
Kyle: When I am 18 then I will be a grown up and I can get married.
Mom: You can get married then but most people don't get married until MUCH later than that!
Kyle: (after thinking for a minute or so) Mom, how will I find someone who has the same last name as me?
After a little giggle in my head, I explained that girls usually change their last name when they marry boys. Just another example of how my boys are growing up in the world and trying to understand it!