“RBF” usually means “resting b**** face.” It is a slang term for a facial expression that looks serious, annoyed, or unfriendly, even when the person is not actually upset.
People use “RBF” in everyday conversation, social media, and jokes to describe someone who naturally looks unapproachable or stern. It is often said in a playful way, but it can also be rude if used to judge someone’s face or mood.
Meaning & Usage
RBF is used when someone’s neutral face makes them seem angry, tired, or not interested in talking. For example, a person may be perfectly fine, but their face makes others think they are upset.
Examples
“Don’t mind her RBF — she’s actually really friendly.”
“I have such bad RBF when I’m concentrating.”
Is RBF always negative?
No. People often use it jokingly, but it can sound insulting if said in a mean way.
Can someone have RBF without realizing it?
Yes. Many people do not know they have it until someone points it out.
Is RBF a medical term?
No. It is informal slang, not a medical or professional term.
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