I really wanted to like this movie, but it never gave me a chance. It's basically meant to be Spinal Tap with a hip hop theme, but it fails miserably. It consistently feels like it was written and acted by high-school kids for some school project, and that's also the level the humor seems to be aimed at. There is no subtlety and, more damningly for a mockumentary, it never once feels like a documentary. And while the lines aren't funny in the first place, an attempt at dead-pan delivery would have helped -- certainly, anything would be better than the shrill overacting we are subjected to.
I'd recommend this to people who like "comedies" in the vein of "Big Momma's House" or "Norbit"; people who think that words like "butt" are inherently hysterically funny. Other people should stay away and not waste their time.