Last one to post in this thread wins!

Involuntary Muscle Contraction'


Professor Higgins at the University of Sydney was giving a lecture on 'Involuntary Muscle Contraction' to the first year medical students.

This was not an exciting subject and the professor decided to lighten up the mood.

He pointed to a young woman in the front row and asked,

'Do you know what your arsehole is doing while you're having an orgasm?'

She replied, 'Probably golfing with his mates.’