Judy Greer knows something about being a best friend, and she's reporting on the profession for Funny or Die. It's a difficult job and no one wants to do it, but someone has to do it. And boy, are best friends so useful.
Remember that time you were having a perfectly nice lunch with your best friend but she encouraged you to abandon her and stop your boyfriend's airplane? So spontaneous! Remember that time you demanded everything but gave nothing? Such fun!
Best friends: What would they do without you?