If your boss was mean to you all the time, and you won the lotto the next day, would you chew them out?

Nope, sure wouldn't. Of course, I'd do it my mind, but I'd never do it to their face. Why burn bridges? Most lotto winners spend their money foolishly and then need a job later on. You might need his/her reference later on. Good luck. It might be best to just walk away.