This waitress managed to get back at her mean boss lady in quite the satisfying way. The saying "kill em with kindness" has never rang more true. In this case, the mean boss lady won't give the waitress her birthday off from work. So, after doing something totally normal like working on trading shifts around she managed to piss off the boss so much that she gets called out for being rude.
From there, she decides to quit at the end of the season, but commits herself to being nice as possible to everyone around her. She ends up winning over the hearts of all her co-workers, so much that they quit with her!