Neil Armstrong discovered that the moon was made of swiss cheese on this date, July 20, in the year of our Lord nineteen hundred and sixty nine.
Tee-hee-hee! I just wrote sixty-nine!
Ahem! I was 7 back then, and wasn't aware of any other meanings for 69. But if I had been aware I probably would have giggled my pants off.
Anyway, I'm thinking of Mr. Armstrong's famous words: "One small step for man, one giant leap for mankind." Since "man" in this usage is the same as "mankind" that statement is contradictory. And while I'm too muddle-headed in my advancing age to remember the details, I seem to recall that if you accept as true something which is obviously false then you can use that to prove any silly ol' statement you wish, including that the moon is made of swiss cheese.
And everyone knows that the moon is not made of swiss cheese.
It's string cheese.