There's pretty stiff competition, even within the G.O.O.D. Music camp, for the best ad-libs in hip-hop at the moment (2 Chainz started a movement with "Tru") but Big Sean might just be the cream of the crop. "I would say I got the best ad-libs in the game overall," he tells MTV News. Boii! "Swerve," in particular, became a phenomenon on Cruel Summer's smash hit "Mercy," and with his sophomore album Hall of Fame: Memoirs of a Detroit Player on the way, how does Sean plan to top himself off? Watch the video above for his explanation and read the full story at MTV News.