A substitute teacher was beginning her first class... A substitute teacher is beginning her first class. Five minutes after it starts, a boy walks in. ""Class started five minutes ago, why are you late?"" The teacher asked. ""I was on top of Blueberry Hill,"" He replied. The teacher shook her head at the boy and sent him to his desk. Five minutes later, the door flings open and another boy walks in. ""Class started ten minutes ago, why are you late?"" ""I was on top of Blueberry Hill."" Again, t…