Well, calling someone "sir" doesn't necessarily come with the tip of the hat and a bow. I have a hard time imagining mocking laughter and strange looks or even appreciative nods at such a throwaway addressing, but maybe that's how it works over there.
I call strangers any number of things though: buddy, man, guy, chief, lady, miss, ma'am. Whatever the hell comes to mind in the instant.
how do you guys feel about elo guvner
how do you guys feel about elo guvner
Seems more like a weird authority fetish to me. But hey, I'm English and we've seen the Atlantic divide on this one.
All the time, because I consider it to be polite. I make damn sure to say it in the presence of a Police officer / Statie / Armed Service member.
Not southern here, but I use them fairly regularly. Just sounds good/polite when you don't know their name. There's no superiority to it at all, just common decency/respect for another human being.