A bunch of girls had become upset at an anthropology professor who had a knack of offending women.
They decided the next time he did something offensive, they would all stand up and walk out of his class.
Sure enough, at the very next class meeting while discussing a tribe of African natives.
The professor leered and said, "You'll be interested to know the average tribal warrior there has a cock twelve inches long."
The girls all rose in a large mass and headed for the door. The prof sneered and said, "What's your hurry, girls?
The next flight to there isn't until Saturday!"