Husband and wife are waiting at the bus stop with their nine
children.
A blind man joins them after a few minutes.
When the bus arrives, they find it overloaded and only the wife and
the nine kids are able to fit onto the bus. So the husband and the
blind man decide to walk.
After a while, the husband gets irritated by the ticking of the
stick of the blind man as he taps it on the sidewalk, and says to
him, "Why don't you put a piece of rubber at the end of your stick?
That ticking sound is driving me crazy."
The blind man replies, "If you had put a rubber at the end of YOUR
stick, we'd be riding the bus, so shut up."
