Three guys go on a skiing holiday together and to save money they rented only one room. After a full day on the slopes, they return to their room, exhausted and cold.
To keep warm, they all sleep in the same bed. The next morning, the guy on one side of the bed says he had a funny dream that some one was jerking him off. The guy on the other side of the bed said that he had the same dream! The the guy in the middle said, "I had a dream last night, too. But I only dreamt that I was skiing."