I guess it's changed a lot since I lived there, then :) Although, I lived in Arizona - two worlds from Chicago.
I don't think so.It's commonly used on the East Coast, where I lived for longer than I live in Chi, too.
In the UK, it's quite uncommon to hear on the streets. In fact, I'd go a step further and say it's often used in an unpleasant manner.
Strange.I better take some English classes before I go to UK (if I ever go, that is) because it seems I may be up to some culture shock.So what do you say in the UK when you see that a guy just dropped his wallet and is walking away?In the US you say "Sir..." and when he turns around "...you dropped your wallet.".Or a guy held door for you?"Thank you Sir".In most bussineses you are automatically "Sir".Do you have light bulbs?","Yes sir,we do.".Most kids and college students will address you "Sir".Soldiers and Police too.
I agree he was mean and this can break your day or at least part of it.It's hard for me to say that but people and services in Poland are in general pretty rude.I don't see what's the problem with being nice.Just nice,you don't have be exceptional like a dude from some store in ME who was yelling to me "How you doing today,man?!" with a big, friendly smile on his face, across a fairly large store.I still remember him after 10 years.It doesn't cost a penny to be nice and people like nice guys.
Back to the topic,in his defence I can say that he was a lowly paid employee,possibly having bad day.