Oh, Central Line tube card advert, why must you taunt me so? Your message aims to breeze through my eyes as a blast of air freshener would pass through my nostrils, but instead it chokes me as if it were the stench of a commuter’s sweaty armpit. I know you were told at school that missing out apostrophes was a bad thing, but that was an admonition about omission, not an order to sprinkle them without regard for their appropriateness. Tut tut!