FROM LADY ESTHER GYN

I was walking past the mental hospital the other day, and all the patients were shouting, "13...13....13...13."
The fence was too high to see over, but I saw a little gap in the planks and looked through to see what was going on.
Some bastard poked me in the eye with a stick.
Then they all started shouting. "14...14...14...14...."