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.
If I would have actually been Salutatorian, my speech would have gone like that. I hate when people whine about how much they wish they was back in high school fudge that. :) I hated high school <- me in two years when I graduate