A husband and wife are waiting at the bus stop, with them are their 8 children.
A blind man joins them after a few minutes.
When the bus arrives, they find it overloaded and only the wife and her 8 children are able to fit in 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 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 would have put a rubber (condom) on the end of YOUR stick, we'd be sitting in the bus right now, so shut up.