Zombie was hungry.  Zombie was always hungry.  Zombie hunted.  There were other zombies, too.  They were not tasty.  Zombie ignored them.  Zombie knew there were tasty people on the other side of the wall.  Zombie could see them, hear them.  Zombie heard voices, arguing.  Loud noises.  Other zombies heard, too.  Zombie wasn’t strong enough to get people.  Zombie was worried that other zombies were stronger.  But they couldn’t, either.  But maybe two zombies were twice as strong?  Zombie grabbed his neighbor and pushed him to one spot on the door.  Zombie hit the same spot.  The door began to splinter.