You crackers we're blacker than Shaq it ain't no mass or shit... - Tech N9ne (Kill 'Em Off)
Correct me if Im wrong, but isn't it "massa" shit, as in the word "master", refering to a slave master?
Like, "it aint no masta shit" as in: we aint no muthafuckin slaves.
who knows, maybe I just get wild misconceptions of lyrics in my head.
....but I try not to get it twisted.