A man walks past a big wooden fence in front of the insane asylum and hears all the residents inside chanting, “Thirteen! Thirteen! Thirteen!” in unison.
Quite curious about this, he finds a hole in the fence, and looks in.
Immediately, someone on the inside pokes him in the eye.
Before the man could even react to the eye-poking, the people on the other side of the fence begin a monotone chant of…
“Fourteen! Fourteen! Fourteen!”
