Do they use it correctly? Example: the roman "sti c...i" is very often used with the opposite meaning of the original here, that is: as a surprise, probably by guessing.

And by the way, "bagaglio" always surprises people here.

For the non Italians, among the other things the Milan accent basically swaps the open and closed e sounds. I have to change the way I say spaghetti when I'm outside region :-)