Jean, a 73-year-old grandmother, was at her Long Island home Thursday morning when she received a phone call from a man claiming to be her grandson. He was in jail for drunken driving, he said. He needed her help posting an $8,000 bail. But there was one problem, Jean thought — her grandsons are far too young to drive. It was a scam. So Jean decided to swindle the swindler. “I knew he was a real scammer. I just knew he wasn’t going to scam me,” Jean told WCBS, which identified her only by her first name. Jean played along,...