2). However, this phrase was 'taken back' by the African American community in the 1980's. Usages were applied to fellow African American employed in lucrative, glamor fields such as professional sports, entertainment, or drug dealing.
3). Unfortunately, this phrase was co-opted by 'the man' in the early years of the new millennium. Specifically by Wall Street traders upon hearing of the first round of financial bailouts. Note - this usage predates the Obama presidency and as such can't be construed as a racist attack on the Obama presidency. Rather, Wall Steet wiggers are 'keeping it real'.
2). That bitch Rick James has been riding the Nigger Gravy Train since Super Freak charted.
3). "No matter how much we fuck-up, the government will bail us out. We're big too fail, Biff! We're riding that Nigger Gravy Train!!