Rae Sremmurd’s Slim Jxmmi is Getting into Boxing Rae Sremmurd’s Slim Jxmmi is switching careers… kind of. The rapper has told TMZ that he is training to get into boxing. And he’s even prepping for his first match. He shared that now that he’s 30, he wants to make some changes, set good examples for his kids, “Be done with the stupid s—t.” Back in January, he was arrested for the battery of his girlfriend, but she has since recanted. Would you pay to see Slim in a boxing match?