One day a student was taking a very difficult essay exam. At the end of the test, the prof asked all the students to put their pencils down and immediately hand in their tests.
The young man kept writing furioulsy, although he was warned that if he did not stop immediately he would be disqualified. He ignored the warning, finished the test 10 minutes later, and went to hand the test to his instructor. The instructor told him he would not take the test.
The student asked, “Do you know who I am?”
The prof said, “No and I don’t care.”
The student asked again, “Are you sure you don’t know who I am?”
The prof again said no. So the student walked over to the pile of tests, placed his in the middle, then threw the papers in the air.
“Good” the student said, and walked out. He passed.
First he made sure the teacher didn’t know his name (which student he wasI). Then he put his papers in the middle of the stack of papers -(so the teacher could see it) and threw them all in the air – to mix them up. So – at this point when the teacher graded this particular paper, it looked good and he (the name on the paper) got a passing grade.