We went outside the other day, after it had been raining.  The kids put on their rain boots and dug out their pails and shovels.  I was in the garage, getting the stroller for the baby when I heard Bubby say what I thought was: D@#n.  I was just about to scold him for using a word that is not allowed when I heard the rest of what he said, "Let's make a dam in the puddle".  Oh, I did hear correctly, but it wasn't a bad word, but in the context of a very "creative project".  They set to work.  After about 30 minutes of mud & fun, they did build a very functional dam.  They managed to stop the flow of water through the puddle.  I was VERY proud of them!