tell (one) where to get off
To express one's frustration or anger with one in an explicit, aggressive way. If she assigns me one more project, I'm going to tell her where to get off! A: "How did you end up in jail?" B: "Well, the officer tried to give me a parking ticket, and I told him where to get off."
tell someone where to get off
to scold someone; to express one's anger to someone; to tell someone off. Wait till I see Sally. I'll tell her where to get off! She told me where to get off and then started in scolding Tom.