or the standing up myth that never saw the light of day.
Not strictly true. From today's online issue of flights.co.uk:
But, Ryanair's project of creating a standing-only area on its flights to make space for 41 extra passengers doesn't work either with the new Boeing. For doing so, it would be necessary to remove the rear lavatories as well as the last six rows of seats. O'Leary said that they won't place any new order until Boeing comes up with a solution for this inconvenience.
I love it - removing the toilets is an inconvenience!