dirtying up the classroom

Sometimes the best part of my days are spent with people who can't read, can't tie their shoes, and are missing half their teeth.  Some of the most frustrating part of my days are spent with these people. But they are my little people and I love them.  They have the most fun when they get messy, and subsequently get me and the whole classroom messy.  At least "dirtying up the classroom" in art means that it just gets more colorful (I just have to wash off/out this kind of color...).  Hmmmm....getting your hands dirty....creating almost without thinking....sounds like something us big people should try too.