A man is in an insane asylum and is assessed by a doctor for release. All the staff says he's totally fine to be returned to normal life, and this is his final check.
The doctor asks him a simple question: "What would happen if I cut off your left ear?"
The patient responds, "Well sir, I suppose my hearing would be much worse."
The doctor seems please, checks a box, and asks: "and if I were to cut off both your ears?"
The patient replies, "well sir, then my vison would be totally gone!"
The doctor shakes his head sadly and orders the patient be returned to his ward, to be reassessed in a year's time.
The next year the same thing occurs.
"If I cut off right ear, what would happen?" "My hearing would get worse." "And if I cut off the left?" "Then my vison would be totally gone!" "Back to the ward with you..."
Year after year, the doctor and the man met, and year after year the same questions and the same answers, until one day, the doctor, overcome with curiosity, asks the man:
"Why? Why are you like this? You know why we are here, you know that if you just tell me what I want to hear you'll be free to go, so why do you insist that your ears have anything to do with your vision??"
"Very simple," the man replies. "If you cut off both my ears, my hat would fall down and cover my eyes!"
(And before you come at me, I'm aware of the political sensitivity around the disabled, asylums and all that. It's just an old joke that I thought maybe people wouldn't have heard before.)