0 abbreviation for resting bitch face : an unkind, annoyed, or serious expression that someone has on their face when relaxed, without intending to:
I joined the ranks of a tribe of women who suffer from the scourge known as “resting bitch face” or, increasingly, just RBF.
When literally “at rest,” whether standing in the supermarket checkout line or zoning out during a meeting, RBF sufferers project a severe look of: “Don’t even think about talking to me.”
Here is a slideshow of celebrities who have RBF.
Chronically serious-looking faces - a “condition” recently dubbed “resting bitch face,” or RBF - is a maternal trait in my family.