A Stupid Football Player

At a large college there was a football player that was extremely stupid. He sat beside a boy in class that was really smart and the teacher knew that he was cheating, but he just couldn't catch him.

One day she was grading a test and she noticed that the smart boy had written "I don't know the answer" on number 10.

So she looked at the jock's paper and smiled. He had finally given himself away. His answer looked like this:
10. me neither