RNF
RNF (Resting Nigga Face), a facial expression exhibited by a male that signifies that "Right Now ain't the time, but I'm not mad." A facial expression often used to detour unsolicited conversation.
Paul: Damn, Jake seems upset...
Mike: Why?
Paul: I asked him about Kanye's rant and he just gave me this empty blank stare.

Mike: Nah, he ain't mad. That's his RNF (Resting Nigga Face); he does that when he doesn't want to be engaged in conversation, but still wants to be around people.

Paul: So he's not mad?
Mike: Nah! But don't press him. If he starts Ice-grillin, then you have a problem!