A UCLA Professor was giving a lecture on
"Involuntary Muscular Contractions" to his
first year medical students.
Realizing that 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."