"Mom, why does Carsten have to taken medicine everyday?
"Because he has allergies and if he doesn't he gets a runny nose and itches all over."
"Mom, I have allergies, too."
"Really? What are you allergic to?
"Roofs. But not the inside where you sit, just the outside that's black and dirty. They make me sneeze and be grumpy. I think we need to get away from them."