I'm not sure specifically as it could be a rather unique or self - created story. It might be about different perspectives during Christmas, like the 'left' and 'right' could symbolize different groups or ideas within the Christmas context.
The 'left right christmas story' could potentially be about two opposing forces or ideas during the Christmas season. Maybe it's about the contrast between traditional and modern ways of celebrating Christmas. For example, the 'left' could represent the more old - fashioned, family - centered, religious aspects of Christmas, while the 'right' could be the more commercial, new - age interpretations. However, without more context, it's really just speculation.