Justin Timberlake and Jimmy Fallon Sing 'The History of Rap 4' on 'Late Night'

You knew this one was coming. After spending all week on Late Night with Jimmy Fallon, Justin Timberlake and Jimmy Fallon finally gave a new installment of The History of Rap. This sketch always impresses me. While Fallon is the one known for cracking up, Timberlake was the one who couldn't keep a straight face a few times tonight. The History of Rap 4 also makes it the second time in less than a week that Timberlake got to parody Trinidad James' All Gold Everything, previously spoofing it during the Veganville sketch on Saturday Night Live.

Check it out The History of Rap 4 after the jump.