"Corn Starter" Ghosts

Add cornstarch to Easter egg dye, and you get a pretty good sidewalk paint. Add cornstarch to kids and you get ghosts!

(My back was turned - okay, so I was inside - when they decided that since it felt so good on their hands, they should rub it all over their arms, and maybe a little on their faces wouldn't hurt either. T kept saying "corn starter" instead of cornstarch, and his friend is the one who decided they were ghosts.