Originally Posted by Rain Dancer
It doesn't, if you've ever watched anyone sleep, they're eyes go back and forth, this is called rapid eye movement, which is a sign that they are dreaming. Look it up my friend
Usually, when people sleep, their eyes are closed, so we can't see them moving at all.
Anyway, all True Christians™ know that rapidly moving eyes are a clear sign of demonic possession. We've known that since the Middle Ages.