Doctor and nurseA man who was very upset walked in to see his doctor.
"Doctor, you've got to help me!" he wailed.
"What seems to be the trouble?" asked the doctor.
"I keep having the same dream, night after night.
There's this door with a sign on it, and I push and push the door but I can't get it open." "What does the sign say?" asked the Doctor.
"Pull," said the patient.