Another phenomena, similar to
qwertyuiopasdfghjklzxcvbnm, that happens to a computer's keyboard when a
human being is
bored to death, but instead of pressing the keys in a west-east direction, said human being decides to type them in a snake-like pattern, starting from the top row, right corner going left then from the middle row, left corner going right and finally from the bottom row, right corner going left.