The idea behind the red butterfly comes from the imprint left on the neck after being asphyxiated. Since the people of All God's Village believed the best form of sacrifice came from one twin strangling the other, the butterfly shape was one commonly seen and identified with. By wrapping both hands around the neck and pressing opposing thumbs over the jugular, the skin would become flustered by loss of oxygen and turn a deep red mark in the shape of a flattened 'v', a shape very similar to a butterfly.