Lyric discussion by schirzel 

Cover art for Pirate Bones lyrics by Natasha Bedingfield

This songs reminds me of when someone goes along in a relationship for the sake of a relationship (romantic, casual, etc.), not necessarily for their own emotional growth and well being. They feign their emotions and ideals to make the other person happy, but at the cost of their personal identity. And perhaps they receive some sort of happiness themselves, but it is of a material nature, such as sexual pleasure, so it conflicts with their soul -- their internal happiness. All the feigning and materialism seems to waste away identity and soul until only bones are left... and doing so also takes a toll on the other person, even if they are 'good as gold,' being sincere and searching for internal happiness. That person's being lugged around in a bag by someone who can't satisfy their own thirst in the middle of the desert... It hurts both people. They both remain lonely in the relationship.