RBF usually means “resting bitch face” in casual conversation. It describes a facial expression that looks unfriendly, annoyed, or serious, even when the person is not feeling that way.
People use RBF in everyday talk, jokes, and social media when someone’s face naturally looks stern or hard to read. It is often said playfully, but it can also be rude if used to judge someone’s appearance or personality.
Meaning & Usage
RBF is a slang term, so it is mostly used informally. People may say it about themselves or about someone else when they think the person looks unapproachable or serious by default.
Examples
“Don’t worry, she’s nice—she just has RBF.”
“I get told I have RBF all the time, even when I’m just thinking.”
Context / Common Use
You will most often see RBF on social media, in conversations with friends, or in jokes about facial expressions. It is not a professional or polite term for formal settings.
Is RBF always offensive?
Not always, but it can be. Some people use it jokingly, while others may find it insulting or unfair.
Can RBF describe a man too?
Yes. Even though people often use it for women, it can describe anyone with a serious or hard-to-read expression.
Is RBF a medical term?
No. It is informal slang, not a medical or technical term.
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