Stones is Colonial slang for a part of the male anatomy responsible for virility. The meaning of the colloquial term is courage and strength.
Example
- As Sam Adama is about to be promoted in the Ha'la'tha, the Guatrau tells the story of how they met. Sam and Joseph Adama had immigrated to Caprica as orphans. Sam tried to pick the Guatrau's pocket. Right then, the Guatrau knew that Sam had the stones to be one of them. ("The Dirteaters")