unsolved mystery

The other day I was working on the grocery list for next week..I got focused and was not paying attention to Cayden very much until I happened to look down and notcie his face..he had black all over his mouth and nose and hands! I searched everywhere in our tiny little living room and have no idea what is was or how he did it...but Cayden thought it was pretty funny and I was even laughing about it until I saw the black all over one of my pottery barn pillows =( You cant see it very well in the pictures but it was definately something I wanted to remember