I think he's using the term "cracker" as a slang term, "cracker" is an old derogatory term that black people would call white people. An "oreo" is a black person that acts white(black on the outside white inside), so an "oreo cracker" would be the opposite, a white person that acts black.
I think he's using the term "cracker" as a slang term, "cracker" is an old derogatory term that black people would call white people. An "oreo" is a black person that acts white(black on the outside white inside), so an "oreo cracker" would be the opposite, a white person that acts black.