Tell somebody where to get off/where they can get off
Definition 1 of 1
Pro Tip 1/3Assertiveness
Use the phrase to assert yourself when someone's actions bother you. 
After his constant teasing, I told him where to get off.
Pro Tip 2/3Informal Context
The phrase is informal and might be considered rude in professional settings. 
In the meeting, I couldn't just tell my boss where to get off.
Pro Tip 3/3Strong Emotion
It's used to express strong irritation and should be used sparingly to avoid offense. 
He was so arrogant that I had to tell him where to get off.