Bang Bang Bang!!!!

My 4 yr old son Nathaniel has been banging and banging all weekend long. I kept telling to quit banging and he tells me he is a builder. So once again today he has been banging. I told him to go outside and bang and he tells me its too hot. So again with the banging. By now I am ready to bang bang my head in the wall. I sure hope he finds something else to be than a builder banging on everything he sees.