A phloke is simply the opposite of a joke--in other words, a phloke is a bad joke. It is a way of keeping things positive--when someone says a bad joke, you can call it a good phloke--and not hurt anyone's feelings.
Johnny: What do you get when you mix a calculator and a phone?
Paul: I don't know, what do you get?
Johnny: A Call-culator!
Paul: Good Phloke.
Paul: I don't know, what do you get?
Johnny: A Call-culator!
Paul: Good Phloke.
by Quadratics June 12, 2006