Alt-country singer Robert Earl Keen had sharp words for rock band Kings of Leon when El Paso, Texas area rock station KLAQ asked him if he'd ever stopped a show because of the heat. "Those guys are sissies man," Keen said, cutting the question short. "Let me tell you, I hear a lot of complaining from those guys, and you know what, 'Man up!' is what I say. They're half my age, get up out of your bunk and go play your guitar."