Here is one I used on a boss once:
"Second guessing me doesn't make you smart, second guessing me makes you a ****"
I gave notice less than 10 minutes after that and his response was you can't quit, you are fired - I retorted, call it you what you want but I'll leave my keys on your wife's pillow, ****. He was the CEO, I was the President of the company.
TheGrooveking