Involuntary Muscular Contractions (bit naughty)
A professor was giving a lecture on "Involuntary Muscular Contractions" to first-year medical students.
Realising 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 you're a-hole is doing while you're having an orgasm?"
She replied, "I never thought about it before, but
Realising 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 you're a-hole is doing while you're having an orgasm?"
She replied, "I never thought about it before, but
Spoiler: