"It's kind of like how Eminem was in that rap battle in eight mile where he mocks himself relentlessly. And then the other guy comes up and he's like, crap, what am I going to say now?" "We call it pulling the sting, right? It's like, oh, it stings, but you got to get the thing out of there," says his former co-conspirator. 'You want to have it all in advance because you're trying to exhaust the universe'