OUCH. People had been talking about this for a while, and it finally leaked. I believe Rhymefest may have even said on Twitter that this is his first official diss track (obviously excluding his Scribble Jam battles, etc.), but I could be mixtaken. If not, it's a rare occasion seeing El Che really go after another rapper. My favorite line is, "If I see him, I'll probably pee on him." Haha. This will be on Rhymefest's upcoming mixtape The Manual.
Update: Rhymefest explains via Myspace the whole story behind this beef. (Click to read)
Rhymefest: "SuperSonic (Chucky Cheese)" (Charles Hamilton Diss)