What does RBF mean?

Resting Bitch Face - When you naturally relax your face and your expression makes you look angry, upset or displeased.

Other definitions of RBF:

  • Really Bout to Fight - a popular expression used in New Jersey when a situation becomes tense.

  • Really Bad Friend - Someone who claims to be your friend without demonstrating friend like qualities.

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How to use the term RBF:

  • "Sorry if I look unhappy when I'm not smiling. That's just my RBF."

  • "Did you see those drunk guys? They're RBF out here."

  • "Wow! Lisa is the definition of an RBF."

More slang terms:

IHMB

IHMB

I Hate My Boss

ECU

ECU

Electronic Control Unit

FTSD

FTSD

Fears to say diddly