While in the military in Europe, I was traveling from Amsterdam to Frankfort by train. I had to change trains at Cologne. My train was on tack 3B.
I entered the compartment and started a conversation with a gentlemen as the train began to pull out of the station.
"Where are you going?" he asked. "Frankfort," I said. "Oh, my, I am going to Hamburg," he exclaimed, "and I just realized that Hamburg is in the opposite direction!"
He ran down the corridor and jumped off the train just as it came to the end of the platform, almost killing himself.
I turned to the conductor standing in the corridor, and asked, "This train does go to Frankfort, doesn't it?"
The conductor replied with a look of disdain, "No, this train goes to Hamburg, sir..."