Originating from a moron who mightily enjoys pretending to be Snoop Dogg, in an attempt to sound cool. This is possibly due to the fact that he was born with a mental deficiency, forcing him into a life of asshattery and prickwaving.
Jimmy: "Yo brotha, J-Lo iz dat shiznit yo, fo real. Wrd."
Bob: "Jimmy you moron, stop being an AceCase."