Sorry to be silly about this but I recently heard about RBF whichs means resting ***** face. I've been accused of being annoyed when I'm happy as a clam. Maybe you have resting scared face �� Whoever asked you this may have been genuinely concerned, or just nosy. It's similar to people telling you to smile. Just ignore them or laugh it off. Or maybe swat them over the head with your pocket book. I better stop because I don't think I'm helping.