We're terrible drivers
Here’s the thing: we’re aggressive drivers, we’re unapologetic drivers, we’re verbally nasty drivers. But we’re not terrible, per se. Which is to say, we understand the rules of the road; we just don’t always respect them. Go to Los Angeles or some other car-centric city, and you’ll understand the difference between willfully bad driving and true vehicular incompetence.
We all speak with that Mystic River accent
Thanks, movies and TV, for casting us all as R-dropping street rats (and seriously, they never get it right -- especially in the aforementioned film). In truth, the Boston (and Brahmin) accents are far from pervasive city elements, and not all Boston accents sound alike. Also, this may come as a shock, but not everyone who lives in Boston was born in Boston -- and the Boston accent isn’t infectious.