"You're not fit to wear the shirt!" Pity the poor footballer, shuddering on hearing this chant from the baying massed crowd. To the fan, the disciple, this is one of the worst insults they can throw at a player. The shirt is sacrosanct. It declares who you are and where your allegiances lie, and, as importantly, separates you from the dreaded "other," that lot across the tracks who wear a different strip to you.