If your index finger is longer then your ring finger what does that mean?

The relationship between the sizes of body parts is promoted in folk lore as a way of guessing what the size of "hidden bits" are compared to the visible bits. 'Fraid not.
As an experiment try these old grannies' knitting rules:
  • Twice round your thumb is onece around your wrist
  • Twice round your wrist is equal to once round your neck.
  • Twice round your neck is once round your waist.