Doctor and patient question and answer joke

Patient: Doctor, what should I do if my temperature goes up five more points?
Doctor: Sell!

Patient: Doctor, if I give up wine and song, will I live longer?
Doctor: Not really. It will just seem longer.

Patient: Doctor, what does the X-ray of my head show?
Doctor: Absolutely nothing!

Patient: My hair keeps falling out. What can you give me to keep it in?
Doctor: A shoebox.