This is part of the Frank said feature. You can see more here.
Frank was looking unusually grumpy one day so I asked him if he was okay…
Frank: I’m sorry I didn’t mean to look angry, its my resting bitch face.
Me: You don’t have resting bitch face.
Frank: Yes I do.
Me: Its not bitch face when you’re a guy
Frank: It is so. I’m a total bitch