When I was about five or six my Dad dug a trench to put sprinklers in.  He dug the trench in one weekend and it had to wait for the next weekend to put the PVC pipe in.  That week Heather, my older sister and our babysitter, filled up the trench with water.  Then we got our swimsuits on and played in the water.  She convinced us to cover our skin with mud in a Cleopatra style beauty treatment.  We were brats a lot of the time when she babysat us, but that was a good day and I still smile when I think about us laying out in the sun while the mud baked on our skin.