An eastern Iowa teenager apparently had too much time on his hands after a snowstorm canceled school.Davenport police say a 14-year-old boy pulled an armed robbery while off school on a snow day. Police say Dean M. Porter, a student at Young Intermediate School, used a pistol to rob a man getting out of his car Thursday behind a central Davenport tavern. Police say Porter was captured nearby a short time later and admitted to the crime.