Three Billy Goats Gruff Reverse

The idea for this appeared while I was listening to "It" by Stephen King as an audiobook. This story (The Three Billy Goats Gruff or Bukkene Bruse as I know it as) was mentioned, and I started thinking about what it would be like if the roles were flipped around. The troll ended up as a monster in stead of a troll however, and after some thought I realized it reminded me of Mike from Monsters Inc. xD But anyway, it would have been hilarious if a monster was minding his own business, crossed a bridge, and midway this GIGANTIC goat appears from underneath! Revenge from all the times they crossed in fear xD