Out of my way

Hey, fellow drivers, apparently Denver has the sixth-most courteous drivers in the U.S. according to a latest poll. Portland, Ore. has the most courteous drivers. You've got to be kidding right? Did the criteria for most courteous including flipping people off, waving your arms in frustration and not letting people merge? If that's case, I saw several acts of courtesy today. If we're courteous then I'd hate to see Miami (the least courteous). Not that I want to inspire a Tom Tancredoish backlash by commenting on our neighbor to the south but do they stab you as they yell at you there?