Recurring Dream

A 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.