okay so there's this bus station and inside are a father with his wife and nine children, and a blind man. The bus arrives, but they can't all get on, so the guys agree to let the wife and nine children ride, and they will walk. After a couple miles of walking, the father gets annoyed by the blind guy's cane tapping all the time. He says "hey why don't you put a piece of rubber on the end of your stick?" and the blind guy replied "hey, if you'd put a piece of rubber on the end of YOUR stick, we wouldn't be in this mess!"