Kendrick Lamar took to Funkmaster Flex's tastemaking radio show last night and delivered the goods - in the form of a fantastic, mind-melting freestyle over Notorious B.I.G.'sTupac diss track "Who Shot Ya?" Over that instantly recognizable sneaking piano beat, Lamar busts out the wit and the charm in spades, hardly letting up on those verbose mouthfuls of brilliantly delivered biography and advice over almost four minutes. If this doesn't get you psyched for his debut good kid, m.A.A.d. city, we're not sure what will. Check it out.