Been a bad boy and I ain't talkin' bout ci-roc
He is saying he has been bad, as in evil/dangerous.
Not a Bad Boy like the Rapper Diddy, and the people on his label, “Bad Boy” Records. He pronounces it Ci-Roc to make the lyrics flow better but he is referring to Cîroc which is a French vodka, which Diddy is the ambassador for.
To help improve the meaning of these lyrics, visit "Die For Me" by Lil B Lyrics and leave a comment on the lyrics box