Shimy182s joke beater time !!!
There was a Professor that always begun a lecture with a vulgar joke. After one particularly nasty example, some of the women in the class decided to walk out the next time he started. The professor got wind of this plot, so next morning he walked in and said, "Good morning Class. Did you hear the one about the shortage in 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!"