A question for you: what do the uniquely footballing concepts of the prawn sandwich brigade, Mickey Mouse cups, the multiball system, Kerlon’s seal dribble, the school-playground emergency option of “rush goalie”, Liverpool’s “Spice Boys” squad of the mid-1990s and the increasingly dated act of “doing a Leeds” all have in common? Well, as you’ve already figured out, they have all been exhaustively documented and explained on Wikipedia.