A Cross On The Back Of My Neck, Just Below My Cerebellum, Lining My Spinal Cord. The Cerebellum Controls Voluntary Movement, Balance, Equilibrium And Fine Motor Skills. The Spinal Cord Is Connected To The Brainstem Which Basically Controls All Vital Bodily Functions. So I Feel It Is Appropriate, Symbolically At Least To Have A Cross Where My Actions Are Determined.

Source: pialashay.blogspot.dk