In Cambridge, a Havihd student. In Sommaville, a Cambridge resident. Local speakers argue about its derivation: Some say its from "Bahnyahd," a derisive term for Hahvihd Yahd; others argue it comes from the old MBTA cah bahns just outside the Squayuh (the bahns went away when the Red Line was extended to Sommaville).
Eric Vroom recalls: "I can remember about ten years ago people in Somerville had bumper stickers and hats reading "NO BARNIES IN SOMERVILLE!!" And it just didn't mean Harvard students, it was any geek from Cambridge."
Meanwhile, R.D. McVout shows how to use the word as an adjective, in his contribution to a debate in the ne.food newsgroup about trendy restaurants in Somerville: "Why don't all of you terminally hip folks go and discover some other environment to befoul and bemoan? As a resident of Somerville, I'd be beside myself with glee if all of you Barney-assed pseudo-cognoscenti would climb into your Explorers and go back across the river where you obviously long to be."