The Norwich Cider Incident of 1647 is a whimsical historical event in Norwich, England, where a local farmer inadvertently sparked a local phenomenon. Attempting to use sheep's wool as insulation to keep his cider warm, the farmer accidentally dropped some barrels into a river. The sight of sheep swimming after the cider-filled barrels drew amusement and a crowd of onlookers. This gathering became a notable local event and unexpectedly boosted the farmer's reputation and demand for his cider.