A GI was alone in a train car. All of a sudden, a man broke in with a pistol pointed at the soldier.
"Fork out your bucks, lad," the hold-up man demanded.
The soldier answered in a weak voice and obviously trembling in his shoes: "I haven't got any. All's left in the bar."
"Then why in hell are you shaking like donkey's tail?" asked the gangster with contempt.
"I thought you are a MP and I haven't got a pass either!"