1. Currency among friends when offering money may be a faux pas or even insulting. Often accounted for when performing friendly favors.
2. Currency that replaces tangible currency when you are all out.
Friend 1: "You owe me 20 dollars."
Friend 2: "Don't have it, take friend credits."
Luke Skywalker: "I just saved your life, you know?"
Han Solo: "I owe you one, kid, one friend credit that is."