2. A word used to describe someone as racist, xenophobic, and totally anaware of any world outside of Berkhamsted. Specifically coined at the University of Sussex, in the mid-2000's. Particularly used by drama students.
"Uh, yah! I, like, go to Berko girls' school"
2. -"Are there gunna be any darkies there?"
-"God, you're so berko"