Generic rappers name, used by people who have no clue about hip hop. A merging of Dizzee Rascal and 'Ol' Dirty Bastard
Jean: "I can't stand all that hip hop nonsense they play on the wireless thesedays"
Maureen: "Ooh I know. Our youngest keeps playing a record by Dizzee Bastard, or somebody"
Jean: "Oh yeah my nig, he's the shit!"