Leonardo DiCaprio is opening up about what he was like as a kid — and he isn’t going easy on himself. “I was essentially a dwarf with the biggest mouth in the world. I would talk back to anyone and be up for any fight,” the “Inception” star tells Rolling Stone. “I was a real punk, there’s no question about it.” DiCaprio also says he was lucky to have been a teen heartthrob before the advent of TMZ. “I got to be wild and nuts, and I didn’t suffer as much as people do now, where they have to play it so safe that they ruin their credibility,” he says. “I didn’t care what anyone thought.”