Contraction jokes

A woman in labor suddenly shouted, "Shouldn't! Wouldn't! Couldn't! Didn't! Can't!"

"Don't worry," said the doc. "those are just contractions."

'Involuntary Muscle Contraction'

A Professor 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 asshole is doing while you're having an orgasm?' She replied, 'Probably golfing with his buddies.’

My wife was in labor with our daughter, everything was going well until she started shouting "Shouldn't! Couldn't! Wouldn't! Didn't! Can't!". "Doctor, what's wrong with my wife?" "Nothing, she is just having contractions."