The Admiral found himself craving a candy bar and knew there was a candy machine in the building's entry. He walked down, only to discover that he didn't have any cash.
A seaman was walking past and the Admiral asked if had a dollar to spare.
"Sure thing, buddy," the seaman replied, reaching into his pocket.
The Admiral exploded. "Son, I am not your buddy. I am a full Admiral. I outrank the daylights out of you and you will treat me with the respect due to my uniform and my office."
"Yes, sir," the seaman said, standing up tall.
"Now," the Admiral repeated, "do you have a spare dollar?"
"Sir, that's a negative," the seaman repeated respectfully.