There were three nuts in an asylum and they had been doing well in their therapy, so the doctors' committee decided it was time to give them a test, to see if they were ready to return to society.
The first nut goes in and the doctor asks him "What's two plus two?"
The nut thinks and replies "Eleven."
The doctor gives him another chance but the reply was again "Eleven."
The doctor regrets that he failed the test and calls in the second nut and asks him "What's two plus two?"
The nut thinks hard and replies "Blue."
The doctor reluctantly gives him a second chance, but the nut confidently replies "Blue."
So he calls in the third nut and asks him "What's two plus two?"
The nut shows he is thinking and replies "Four."
Ecstatic the doctor congratulates him and asks him to tell him how he got the right answer.
And the nut explains "Well, it's simple. Two times two is eleven, divide by blue makes four."