Involuntary Muscular Contractions

[Rockwallgriller]

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 a$$hole is doing while
> you're having an orgasm?"
>
> Without hesitation, she replied, "He's probably deer hunting with his
> buddies."