What is the shoots and ladders song about?

Ring Around the Rosies- Plague .One Two Buckle My Shoe- Witchcraft .London Bridge Is Falling Down- Given .Nick Nack Pattywak- Do Eating Old Mans Bone, Roll . Whats Left Home .Merry Had a Little Lamb- Slavery .Ba Ba Black Sheep- The Outcast of a family is . . referred to as the black sheep . of the family, so this is about . the master, the maid, and the . little boy down the lane . . . . killing him(life=wool)