Blake and his parents were drinking at the bar in a train station when they heard a whistle.

Blake and his parents were drinking at the bar in a train station when they heard a whistle. The three of them rushed out of the bar onto the platform only to discover that they had missed the train. The next train is in one hour, said the stationmaster. The three went back into the bar. The parents had another drink; Blake had a Pepsi. Again they heard a whistle, rushed out and discovered the train pulling away. Next one is sixty minutes from now! said the stationmaster. An hour later, Blake, with his mom and dad, raced out onto the platform, and his parents leaped onto the train as it pulled away. The boy was left standing on the platform and began to laugh uproariously. Your parents just left you, said the stationmaster. Why are you laughing? They came to see me off!