A 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 ass hole is doing while you're having an orgasm?"

She replied,

"Probably deer hunting with his buddies."