Euphemisms abound for the, uh, delicacy that will be the focus of a festival Saturday in Mount Sterling, Ill., about 90 miles north of St. Louis. Kevin Huston, who owns the Sportsman's Club bar, which is hosting the festival, has heard 'em all: cowboy caviar, swinging beef, mountain oysters, lamb fries. But folks in Mount Sterling (population 2,077) don't mince words, so the festival is known simply as the Sportsman's Club Testicle Festival. "They're not really like chicken or a beef steak," Huston says. "They're in a class of their own." The festival, which will feature beef, pork, lamb and...