A stock broker, suffering a slight nervous breakdown from the Wall Street crash, was taken to a hospital to rest.
While more or less in a daze, he overheard his nurse say, as she handed the patient's chart to the doctor, "Temperature today, 102."
Weakly the broker raised his head and said, "When it reaches 102 1/2, sell," then wearily fell back against his pillow."
(Thanks to Google Images for the above cartoon)