Smart ass

Rico say his friend David sends along this one:

A professor at the University of Mississippi was giving a lecture on Involuntary Muscular Contractions to his first year medical students. Realizing this was not the most riveting subject, the professor decided to lighten the mood slightly. Pointing to a young woman in the front row, he asked: 'Do you know what your asshole is doing while you're having an orgasm?' She replied: Probably out deer hunting with his buddies... It took the rest of the hour to restore order in the classroom.