It was not unusual in the black community to name children Lawyer,General,Major,Captain,etc so when the white man would not address you as “Mister”so and so at least your first name would force him to show some respect.
The whole “Sir”this and that is just a continuation of that tendency.I know a few “Sir’s”from my working in the schools.Its like all the girls named Precious,Unique and Empress-a way to bring elegance into a very non elegant environment.
Okay, but what about when a mother names her two boys, “Liquor and Famous (Fort Worth TX). No kidding, Liquor was killed in a gang shooting.
Famous has yet to meet his demise.
Guess mom awoke under the liquor cabinet after procreating and came up with those wonderful names.