If the moon is made of cheese, it follows that the French must have been there first. And indeed, that's what really happened; The spaceship Napoleon XIV landed on the moon in 1964, loaded up on cheese and returned to Earth by mooring at the top of the Eiffel tower. (What did you THINK it was for?) However, while the roquefort they brought back was deemed "adequate" by cheese tasters, the brie was so-so and the port salut almost on a level with something you buy in a supermarket, vacuum packed in plastic. Any further plans on going to the moon were scrapped after this discovery. As president De Gaulle put it, "Les fromages des rochets sont très bleu" - or in English, "Rocket cheese is distinctly blaaah".
Of course, the news media, NASA, the freemasons and Montgomery Burns quickly hushed this up and instead created the popular urban myth of an American moon landing - something which should be ridiculous to anyone who has ever looked at the moon; the Sea Of Tranquility is, obviously, a tub of very runny camembert, and the notion of landing a spaceship in it is ludicrous.
(Apparently, Norway launched a rocket in 1959 to test the theory that the red planet Mars was made out of smoked salmon. The rocket, which is powered by the largest sail ever made at the shipyard in Stavanger, is expected to arrive any day now if the wind picks up a bit. To quote noted Norwegian astrophysicist Ole Stjernegutt, "If it vorked for Leif Eriksson, it vill vork for us too!")