English phrase from drama scenes

What Does "tell me something i don't know" Mean?

Learn what "tell me something i don't know" means, when people say it, and how to use it naturally in English.

Intermediate
Rude
Firm
Complain

tell me something I don't know.

He means the other person said something obvious, unhelpful, or not worth hearing.

From I Think My Wife Wants To Kill Me, Episode 57

When do people say this?

Scene Context

He reacts with sarcasm, implying the other person has not said anything useful.

Usage Scenario

Use this as a sarcastic comeback when someone states the obvious. It is rude and can escalate an argument.

Better ways to say it

1
Tell me something I don’t know.
2
What else is new?
3
You don’t say.

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