Moshe went to see his doctor because he was suffering from a miserable cold that wouldn’t clear up. His doctor prescribed him some pills, but they didn’t help. On his next visit, the doctor gave Moshe an injection, but that didn’t do any good either. On his third visit, the doctor told Moshe to go home and take a hot bath. Then, as soon as he got out of the bath, he must open all the windows and stand in the draft.
“But doctor,” protested Moshe, “I’ll get pneumonia.”
“I know,” said his doctor, “I can cure pneumonia.”
From Oy! The Ultimate Book of Jewish Jokes, by David Minkoff