An adjective, meaning indefinable by Television, mass media, popular hype, majority opinion, or propaganda. Can mean that one disagrees with and will not let TV/media affect one's decisions, or in some cases means has the belief that the majority is (almost?) always wrong. AKA untubifiable (indefinable by youtube or the Tube).
Person 1: So are you voting for Palin or Obama for President next election?
Person 2: I disagree with both their politics completely. I am going un-TV-definitive and voting for one of the third parties.