Funny joke: How I learned to mind my own business

I was walking past the mental hospital the other day, and all the patients were outside shouting,

'13...13...13.'



The fence was too high to see over, but I saw a little gap in the planks, so I looked through to see what was going on...



Somebody poked me in the eye with a stick!



Then they all started shouting,

'14...14...14'...