No, Mr Shill, it isn't. I've lived in a lot of areas of this country, North and South of the Mason Dixon line. In NO AREA where it is in common usage is "boy" reserved for people who know each other. It is used for total strangers, enemies, acquaintances and relatives in the exact same way that that the less well known "girl" is.
Your expiriences are different from mine. But we’ll see the way this plays out.
Oh, and BTW, who am I supposed to be shilling for?