For a few years an old gentleman had been fighting a persistent plantar wart on the ball of his foot and big toe. He'd tried everything -- over-the-counter treatments, soaking, pumice stones, and freezing.
In desperation he asked his new doctor about the problem, and the doctor suggested he put duct tape on it. When he got home, he looked up duct tape for wart treatment and found that it is as good if not better than other treatments, so he put duct tape on it.
Two weeks later the wart was gone. The next time he saw the doctor, he thanked him and asked if there was anything that duct tape can't fix. The doctor paused a second, and without looking up said, "Erectile Dysfunction"