so he took another hat , this one off stu springer , head of the cubs ' sales department , and he punched a hole in that one and soon half the car was flinging hats at him and egging him on and he climbed up on top of the seats and crawled from one to the next making `` hoo hoo hoo '' sounds like an ape and feeling a sudden , unexplainable pride that welled up through his legs and arms like stalks of wheat gone mad with the growing , and he shouted , `` i am the ape man !