Even suggesting that you put ketchup on a hot dog.
Forgetting that [insert any major summer music festival here] is happening this weekend.
People crowding the L door as you try to get off.
The Ventra bus tracker showing wait times so inaccurate you feel as if you are in The Twilight Zone.
Calling it “Willis Tower”.
When your Uber driver gets lost on Lower Wacker.
Forgetting that the Cubs are playing at home and you have to take the Red Line during rush hour.
When your friend from Schaumburg says “I’ve lived in Chicago my entire life!”