A guy is walking past a big wooden fence at the insane asylum（精神病院） and he hears all the residents inside chanting, Thirteen! Thirteen! Thirteen!
Quite curious about this, he finds a hole in the fence, and looks in. Someone inside pokes him in the eye.
Then everyone inside the asylum starts chanting, Fourteen! Fourteen! Fourteen!
一个人在精神病院的木围墙外路过，听见里面所有的人在唱，十三！十三！ 十三！
他很好奇，就找到围墙的一个洞，然后看进去。突然有个人捅到了他的眼睛。
然后里面所有人开始唱，十四！十四！十四！
