Throughout the year grandparents and their grandchildren do what is called a "back bonding" ritual. They sit back-to-back, usually grandmother to granddaughter and grandfather to grandson, and allow their spine bones to protrude and touch each other's. In this way they are able to deeply communicate. They stay in a meditation posture for as long as needed. Sometimes they sing or tell each other stories. Bones in our culture represent memory; bones carry stories in them. When you sit with your spine touching another person's spine, it is like transferring information from one computer station to another.

Sobonfu E. Some in Welcoming Spirit Home