"How do you know when you've been living in the city too long?"

-You automatically pass up any checkout lane in the grocery store that has nobody waiting in line, assuming without thinking that if there is no line, of course the lane is not open. Then you're shocked to find out that it is, in fact, open, and you can just go directly up to the cashier without waiting!

-Parking lot stalking is no longer strange or embarassing to you.