South of Savanna, along the Great River Road, past the only stoplight in Carroll County, an army of bikers — dressed in requisite black leather jackets and cycle club T-shirts — throng Poopy’s (1030 Viaduct Road, Savanna; 815-273-4307; poopys.com), a wildly popular place where the camaraderie is enhanced by the musicians performing on an outdoor stage, and, of course, plenty of beer.