An affectionate name for Princeton University. Orange is a school color, and bubble refers to the fact that Princeton is so shielded from the outside community.
Townie: Did you hear about the most recent violent crime in New Haven?
Princetonian: No, I was just minding my own business in the orange bubble.
Princetonian: No, I was just minding my own business in the orange bubble.
by princetontiger1 May 31, 2010