...Think Smart! Little Timmy decides that he doesn't want to pay attention in class. The teacher, frustrated with Timmy asks him, ""Timmy! If there are three ducks sitting on a fence, and you shoot one, how many ducks are left?"" Timmy says, ""None, obviously!"" The teacher, puzzled, asks ""Why none??"" Timmy says, ""Duh! Because the shot scared them all off!"" The teacher politely says, ""Well.. No, there are two left. But I like the way you're thinking!"" Then little Timmy decides he wants to …