If a red ball is a 'ball which is red', then a fake diamond must likewise be a 'diamond which is fake, i.e. not real'. But this means, in effect, that we say that a fake x (fill in any x) is an 'x which is not an x'. Is this necessarily a contradiction? What is needed for a theory of meaning to allow these common combinations (fake gun, false fingernails, etc.) to be interpreted the way we normally interpret them, namely as meaningful, not nonsensical? Who discussed this phenomenon successfully?