狼外婆

A long time ago, there was a grandma who visited her three daughters every Monday. So one day, when she was going for a visit, she got eaten up by a wolf. Meanwhile, the parents were going for a walk outside, and the wolf seized this opportunity by knocking on the door and asking in. After some persuading, the girls were just about to open the door when their parents came back and killed the wolf with a stick. They saw that the wolf ate grandma and was just about to eat them. After this event, they learned to not open doors so hastily.