A young soldier is having a cigarette

A young Corporal is sitting in the smoking area having a cigarette, when a brand new Lieutenant walks up him. The Lieutenant asks "Corporal, do you have change for a $20 bill?" The Corporal replies "Yea, sure buddy, one second." Hearing this, the Officer grows cross. "Corporal, I am a Commissioned Officer and you will address me appropriately. Stand up straight, get that smoke out of your mouth, and try again. Now, do you have change for a $20 bill?" The Corporal stands straight up, looks directly to his front and yells "SIR, I DO NOT, SIR!"