I'm going to give my boss an ultimatum that will cost him thousands
Why are you gonna give him an ultimatum?
He's a bad boss, and I a sick of him.
I know you're mad, but giving someone an ultimatum is always a bad idea. He could get really resentful and fire you.
Guess I'm going to have to make him pay then, thanks for your insights.
Ultimatums ae 'last straws' so of deals. The kind that burn bridges. Don't do this unless you are very confident in their response or that you are prepared to burn down this relationship.