A family friend of mine studied Psychology in college, and was telling us all how he scored 100 on his final exam.
He'd walked in that day and there was one lone chair in the middle of the room.
The professor told them they had to write a paper to convince him that the chair did not exist in a maximum of 3 pages.
He was finished within 2 minutes and the professor told him he was brilliant.
There was only one sentence on his paper.
"What chair?"