Juicy J: Rowdy rapper is surprisingly serene

Step onto the tour bus of hip-hop's top hedonist and the calm is surreal. "Anything to drink?" Juicy J asks, eyes smiling behind a pair of black aviators. "Water? Hennessy?" As his bus idles in front of the Howard Theatre in mid-May, our gracious host flops onto the couch in his post-show vestments: sweatpants, athletic socks, sandals.