Urban YouTube channel SB.TV has hosted appearances from some big names in its time, but this might be its biggest yet.

Yesterday, the channel – run by mini-mogul Jamal Edwards – caught up with Justin Bieber, getting the North American child star to freestyle over the ‘Otis’ beat from Jay-Z and Kanye’s Watch the Throne album. Highlights for us are his appropriation of the Young Money grocery bag flow (“Now we kick it in Japan… Kung Fu”), his “Damn Damn JB, where the Hell you been?” opener and the borderline ridiculous tongue-twister about his girl’s perfect perfectness.

Given that it’s not the first time Bieber’s freestyled on air (in fact, it’s not even the first time he’s dropped those bars over ‘Otis’, and you can check him over Notorious B.I.G.’s ‘Who Shot Ya’ here), it’s a shame he didn’t go all the way and do an F64. Better luck next time, right? Imagine if he battled Terminator.