Startled, he replaced the cork. Curiosity soon got the better of him and once again he removed the cork. Again, he heard the same tune, "On the road again, I just can't wait to get on the road again..." He could stand it no more. He replaced the cork, covered the cadaver and raced upstairs to his professor's office.
He persuaded the doctor to accompany him back to the lab. Once there, the student again uncovered the cadaver and displayed the corked rectum. The professor looked unfazed. When the student removed the cork, the same tune emanated, "On the road again, I just..." The professor looked bored and started to walk away. The student was aghast at this casual response.
He said to the professor, "Don't you find this amazing?" The professor replied, "Not really. Any asshole can sing country-western."