do someone's dirty work
Meaning: If you do someone's dirty work for them, you do something unpleasant for them because they don't want to do it for themselves.
- Whenever he wants somebody fired, my boss asks me to tell them. I'm sick of doing his dirty work for him, but if I refuse he'll ask someone else to tell me I'm fired.
- One of the good things about being promoted is that you can tell someone below you do your dirty work for you.
I read this article today that says if the leader of a country starts a war, they should do their own dirty work and