Learn what "you didn't sleep" means, when people say it, and how to use it naturally in English.

This means the speaker can tell the other person got no sleep at all last night.
From Rosy Psycho, Episode 45
Someone notices that another person did not sleep at all and is showing it.
Use this when checking on someone who looks exhausted. It is natural in conversation, though the exact line is a bit long.
Scenes unlock real expressions as you watch
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