Angry Neighbors Ending Explained [SPOILER!]

SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!

SPOILERS AHEAD

Angry Neighbors Plot Summary and Synopsis

When his ultra-wealthy neighbor in the Hamptons builds an obnoxious mega-mansion next door, grumpy retired novelist Harry March concocts an elaborate scheme for revenge that is destined to go hilariously awry.

Source: Wikipedia (CC BY-SA 3.0).