Startled by what had happened, he shoved the cork back into the cadaver and ran up the stairs to find his mentor. "Sir, you've got to come down and help me, I've just seen something I can't believe."
Annoyed by the naivete' of his assistant, he said OK and followed him downstairs. "There, look at the cork in the rear end of that body. I couldn't imagine what it was doing there, so I pulled it out. Please, you do it."
The mortician was a big surprised to see the cork, too, so he walked to the table and removed the cork. Then the Michigan fight song started playing. Exasperated, he replaced the cork in it's appointed position, turned to his assistant and said. "What's so surprising about that? I've heard thousands of ass-holes sing that song."