The action that propels the story is the death of the father and this is the family mourning the death of the dad.
Propels The Action by
The outcome was that the whole family mourns they but the fathers belonging into the grave with the body of the father.
The initial dialogue is the kids are introducing Big joe and in the book, big joe was apparently born with a brain disease and was supposed to die but he lived and in the book big joe loves eating and he ended up eating rabbit droppings.
This propels the action because while they were walking home the kids were laughing at Big Joe for eating the rabbit droppings.
The outcome of the kids making Big Joe eat the droppings is that the kids mom was furious and made Big Joe wash his mouth out and she made the kids eat one rabbit droppings.