If you live in Columbia, South Carolina, and weren’t collapsed, exhausted, in front of your TV at 5:29 p.m. Monday watching the news, well, you blew it. A perfectly charming Waka Flocka Flame gave your weather report on WLTX News 19, and you didn’t even see it. “Rain, rain go away. That’s what all the haters say,” he announced, but there’s no one here to hate but yourself. And the rain, of course, which is universally hated by all haters.