Funny, that was a quote from a NY-er we have written on the back wall at my shop. 
But if youre asking I kick ass.
And to answer another question, I work in a ski shop / retail store in the heart of Colorado gaper-country, so yes, I often make small talk and ask where people are from. Thats how I know what states tend to harbor assholes and which ones arent so bad.
I'll even put up a top ten list from best to worst
1(best, nicest, most polite) Minneapolis
2 St.Paul
3 Chicago
4 Nashville
5Tahoe region
6 LA (can be hit or miss, most people hate LA enough that they relax and chill when they are on vacation)
7 Dallas (and Texans are the worst drivers, its like they've never seen a fuckin roundabout before)
8 Houston
9 Whole state of Jersey. Dont claim Jersey Shore is nothing like Jersey. It is and youre pissed.
10 NEW YORK CITY. your city is such a hell hole that it has ruined your soul. you are always in a hurry and you think you are the most important person alive cuz you come from a place known for being jerks. You dont say hi to anyone cuz youre afraid they're gona mug you. Youre cheap. Youre not polite. Maybe one or two of you have some redeeming qualities, but I have never met someone from NYC i'd hang out with personally.
See, im not a total hater. I have my reasons, and...oh my god... i made some generalizations. i forgot we nevvvver do that on NS.