I think this all the time. Try going in pitch black with a picher of water, a flashlight, and a bowl. As you pour the water in to the bowl shine the flashlight across the water. It will move sightly with the light.
So true. And so creepy because I was thinking while putting on my makeup the other day that someone needed to make an Yzma/mascara meme. Except in my head it was one of those & I think I look when I wear mascara.