In colleges, any Resident Advisor who utilizes smooth talk and deep-throating abilities to gain the favor of his or her superiors. Rafas are notoriously famous (some would say infamous) for their rusty trombones.
rafas everywhere: "Oh sir, you look tired today. Let me get the door for you. And while I'm at it, let me take your pants off and suck your cock for a while. Hmmmm..."