If a dope Booth freestyle, the poignant Pray for 'Em and cosigns from Rakewon and Q-Tip weren't enough to convince you that YP's onto something, then I'm gonna have to assume that you're on something. Unlike yours truly, however, the Chi-town native is willing to give slowpokes the benefit of the doubt – on his new single, What I'm On, he delivers a remedial course on what he's all about. With Tye Hill's inspired sample work bumping in the background, YP lets his lyrically aggressive side shine. While the quotable lines come fast and furious, for once it's easy to pick a favorite; in the most hilarious pop-referential punchline I've heard in a long minute, he spits: “I'm from the city of the pimps and dopeheads, they'll find you in the trunk like when Cosby was Ghost Dad.” While you really can't top a Ghost Dad reference, guest emcee Rockie Fresh makes a valiant effort, keeping things light and witty as he trades bars with the headliner. YP's DJBooth.net/RubyHornet-sponsored No Sleep mixtape is set to drop Dec. 14; in the meantime, why not check out his recent “In the Mix” interview?