Martina Big started out as a white woman, and now she’s here ... with Maury Povich, explaining why she chose to drastically change her appearance. The plastic-surgery-obsessed Big appeared on Maury, wearing a gigantic “Black Girls Rock” necklace and her best kinky weave. Even as the audience sat dumbfounded and confused, you could tell Maury was thinking, “I should have just did my usual paternity-testing show”. “Martina, do you think you’re a black person?” Maury asked. “Yes,” Big replied. “But 80 percent. I have to learn a lot. I know.” Big’s “transitioning” into a black woman included her taking supplements...