Please Don't Call Me Sir

Sir,
I just don't need it
Compliment not deserved
So let the term be reserved
I apologise if my demeanour
Means you treat me this way
Or my position as fate would have it today
My disposition just won't have it
I'm no nobleman you see
You seem a noble man to me
A smile would keep me happy
So don't coat your words with fur
I appreciate the sentiment
But please don't call me sir