Learn what "sir are you serious about this" means, when people say it, and how to use it naturally in English.

It means the speaker wants to know if the other person truly means what they are saying.
From Collateral Hearts, Episode 12
Someone is asking a superior if he is being serious about the situation.
Use this when you doubt someone's words or decision. It can sound disrespectful if said to a boss or in a formal setting.
Scenes unlock real expressions as you watch
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