Me: "You don't keep track of how old you are? But that's important! I can see it now: someone is going to say to you, 'Hey, Justin, are you old enough to get your license yet?' And you're going to go, 'Hmmm...I dunno. I don't keep track of these things.'"
Justin: "We can just go down to the DMZ to figure that out!"
Me:
Me:
Me:
Me:
Me: "So we're heading over to the Demilitarized Zone to find out how old you are?"