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

This sarcastic line means the speaker already knows the information and is unimpressed.
From Why I Did It, Episode 22
The speaker reacts as if the other person is saying something obvious or unhelpful.
Use this in casual conversation or arguments when you want a sarcastic comeback. It can sound rude or mocking, so avoid it at work or with strangers.
Scenes unlock real expressions as you watch
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