Involuntary Muscular Contractions

[harley_cowgirl_20]

A professor at the University of Nebraska 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.
He pointed to a young woman in the Reviewont row and asked,
Do you know what your ass hole is doing while you're having an orgasm?'
She replied, 'Probably fishing or deer hunting with his buddies.'...