There was an old professor who started
every class with a vulgar joke. After one particularly nasty example, the women in the
class decided to walk out the next time he started.
The professor got wind of this plot, so the
next morning he walked in and said: "Good morning, class. Did you hear the one about
the shortage of whores in India?"
With that, all the women stood up and
headed for the door.
"Wait, ladies," cried the
professor. "The boat doesn't leave until tomorrow!"