The Nightmare Scenario
Chaim Yankel was having nightmares so he decided to visit Chelm’s only psychiatrist.
“Doctor,” said Chaim Yankel. "I am having this terrible reoccurring nightmare.”
“What is it?” asked the psychiatrist.
“I am locked in a room with a door on which there is a sign. I try to push it with all my strength, but no matter how hard I try, it won't budge."
“Hmm…” the psychiatrist thinks. "Interesting. But tell me, what does the sign on the door say?"
Chaim Yankel replies, "It says, 'Pull.'"