MODESTO, Calif. - A California bank robber apparently forgot the No. 1 safety rule for wearing masks -- there simply have to be eyeholes to be successful. Bank tellers and detectives alike are still smiling at the image of the thief who walked into the Oak Valley Community Bank in Modesto this week wearing a checkered flannel cloth over his face secured by a hat. Detective Tom Blake said the man cautiously lifted a part of the cloth to see where he was walking, demanded money and began his retreat. "But he forgets which side the door hinges were on," Blake told the Modesto Bee. "He walks into the steel door frame, bangs his head into the frame and knocks his hat off. He backs up a bit, still holding onto his hood, and shuffles out the door." The thief did escape, and police are looking for a skinny man with a raspy voice, a checkered cloth, long-sleeved pink shirt, white gardening gloves and a goose-egg on his forehead.