A friend sent this story to me.....
A professor at University of Minnesota was giving a lecture
on 'Involuntary Muscular Contractions' to his first year medical
Realizing this was not the most riveting subject, the professor decided
to lighten the mood slightly.
He pointed to a young woman in the front row and said, 'Do you
know what your asshole is doing while you're having an orgasm?'
She replied, 'Probably deer hunting with his buddies.'
The professor laughed so hard he could not continue with the class.