North or south?

A customer called, asking how to find our store after flying into Burlington, VT.

Mandy, my manager: "We are about 2 hours due south of Burlington."

Customer: "What happens if we go due north?"

Mandy, after a stunned pause: "You'll end up in Canada."

Customer, as if she has never heard of the nation to the north: "Canada? ... Canada?"

(Why do you suppose she asked what would happen if she went due north after being told that the place she wanted to go was due south? That's a head-scratcher, that is.)