Beating Drums

I am about to lose my mind right about NOW!! You see my grandchildren are in the loft which is right above my bedroom. That in itself is not a great problem. The problem would be that they are playing with their Wii. But what they are playing is what is driving me over the edge and trust me I am close to the edge as we speak. They are up there playing their drum things and the guitar hero. It sounds like I am next door to a bad rock concert. You know what I mean the kind where the drummer has no sense of timing and their drumming is just all over the place. That is what I am hearing.