Did this for my concept class at Ringling. We were given a strange version of the classic "Gift of the Magi" story and had to create a rough image for the moment where the male character goes, "I sold my x for you y." In this case x was "shinbones," and y was "cuticle frames." I was confused too. In my version of the story, the two are serial killers and get the "shinbones" and "cuticle frames" they sell from their fallen victims.