A spit - roasted story could be about a cooking experience. Maybe the girl is going to tell a story about a time when she was at a barbecue or a medieval - themed feast where they had spit - roasted meat. It could include details like how the meat was prepared, the seasonings used, and the atmosphere around the cooking area.
Well, it depends on the girl's creativity. She could tell a spit - roasted story that is related to a historical event. Say, in ancient Rome, there were grand feasts with spit - roasted animals. The story could cover the social status of the people involved, the significance of the feast in that era, and how the spit - roasting was carried out according to the traditions of the time.