But the goats made a plan.  The smallest Billy Goat Gruff set off to cross the bridge.  His little hooves went trip trap trip trap.  A door under the bridge opened and a big ugly troll came out. "Who goes trip trap trip trap across my bridge?" he roared."It's only me, Little Billy Goat Gruff," said the smallest goat.  "Then I am coming to eat you up!" roared the troll."Oh, don't eat me, I'm much too little," said the smallest Billy Goat Gruff.  "My brother is coming after me and he is MUCH bigger."  "Hmm," grunted the troll. "Then I will wait for him."