This is most likely a reference to Fred Williamson’s character in the 1973 blaxploitation classic Black Caesar. James Brown did the soundtrack for the film and that music has been sampled in tracks by Ice-T, Prodigy, and Nas. The film was successful enough to warrant a sequel that same year (!) entitled Hell Up In Harlem which Big L’s pal Mase would use for the title of his debut album.
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