He probably didn't suggest you're from Brooklyn. That's why he doesn't yet know what true rudeness is.
I know only one New York joke. This is it:
Crowded subway train, doors open, people trying to get off are blocked by people trying to get on.
A young tourist says "Now look, people! If you'll just let us off first, it'll be much easier for everybody!"
An old commuter beside him says "This is New York, son. A simple "**** you" will do."
Roberta? Is she the one with the overbite?