Apparently he used to work on British cars, he installed a drain for the inevitable leak...
(Good to see the humour is still intact.)
While in college I dated a young lady whose precious was an British Racing Green MG Midget.
Based on folding myself into it, I came to the conclusion that one purchased that particular model - the Midget - in sizes much like a mens' suit. I imagined Nigel or Beatrix stepping into the Morris Garages dealership and selecting a 36 regular or a 32 short Midget off the rack.
I also assumed that the Midget was not manufactured in any sizes larger than a 38, and that you were out of luck if you needed, say, a 36 long. Your choices in a 36 were simply regular and short.