There was this guy who always seemed to lean slightly to the left all the time. His friend suggested he see a doctor to have his legs checked out.
The guy refused. . . said his friend was crazy.
But he finally went and, sure enough, the doctor discovered his left leg was shorter than his right!
A quick bit of orthopedic surgery later he was cured; both legs were exactly the same length and he didn't lean left anymore.
His friend said, "You didn't believe me when I told you a doctor could fix your leg."
The guy said: "I stand corrected."
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