Was discussing the not-very-well-explained subplot of "mother's milk" in Mad Max: Fury Road with a family member recently.
Yes, what was that all about?
A quick surf around the non-Facebook internet yielded some info:
This site explains the role of breast milk in the film's future barter economy. I guess we could say the movie shows us all this rather than tells it (hey, there's action we have to do here).
A geek wonders if there was a deleted scene explaining the mother's milk.