In the world of cargo shipbuilding there are two classifications - Suezmax and Panamax - which describe a ship design (of no specific shape or construction) that fits within the maximum dimensions that can still fit through either the Panama or Suez ship canals) . This isn't the sort of information that most people bother to remember, I know, but it's a pair of pleasing words that could be useful in a life or death game of scrabble.
This came to mind today when I was standing on the tube, reading my paper, listening to my music, and observing the quite visible discomfort of many of those in the carriage with me. I propose a new standard, one that will definitely come into force when people can genetically modify their children.
This would be the maximum size a person can be and still travel in a reasonable level of comfort on the tube. I think it would be around my size - that is, around 6' and 180lbs - as any taller and your height would mean you'd be all crumpled up, and any fatter and you'd be all sweaty and uncool all the time.
Another thing - Supergrass rock hard.