Whale of a tale!

Yesterday one of my football players seemed to believe that he had gotten a piece of the rubber from the artifical turf field into his eye. Upon further investigation, we realized that he had a sty on his eyelid causing him extreme discomfort. He informed me that his mom uses hard boiled eggs to make stys go away. I had never heard that before, but it got me to thinking. What is you favorite "old wives tale" that relates to medicine? Here are a couple of examples:

An apple a day keeps the doctor away.

Seeing an ambulance is very unlucky unless you pinch your nose or hold your breath until you see a black or a brown dog. This example was taken from the website "Unusual Trivia Collection" at http://www.corsinet.com/trivia/scary.html.

Have fun with this one!!!