An army corporal needed to use a pay-phone but didn’t have change for a dollar. He saw a lower-ranking private mopping the base’s corridor floors, and asked him, "Soldier, do you have change for a dollar?"
The private replied, "Yeah, sure."
The corporal turned red and quickly reprimanded the private, "That’s no way to address a superior officer in the army! It is ‘Sir’ and nothing else. Are we clear? Now let’s try it again. Private, do you have change for a dollar?"
The private glanced at the corporal and replied, "No, SIR!"
Watch those manners. Michael