Twenty-two
Jack is walking past an insane asylum one day. As he gets closer to the fence, he hears a lot of voices chanting, “Twenty-two! Twenty-two!”
This attracts Jacks curiosity, and it just so happened that at just that time, Jack came upon a knothole in the fence. He bent over, and as he peeked inside, a finger reached through the hole from the other side and poked him in the eye. He staggered backwards, and continued walking down the sidewalk.
On the inside he heard loud cheers, and then a chant of “Twenty-three! Twenty-three!” began.