Interesting how this thread is full of good guys and I wouldn't wish it otherwise, though I recall one NVSO on a course with a bunch of flt lt, when asked his what we should call him said Sir, and insisted, as a student, logging flight time as captain.
Back to the good guys, Air Cdr base commander was a stickler for mess rules. He was also vertically challenged. One night, at a beer call, come the witching hour of 7pm, came behind a very young Fg Off PN, took me by both elbows and lifted me up. "You and I Sir are incorrectly dressed, I suggest we rectify the matter."
Top bloke.