Back in 2011 I wrote a post that I titled, "Dummies for Dummies". It began with the suggestion that I'd written a book of that name, and it included this mock-up of the "cover":
(Thanks to former grad. student, Jacob Schwartz, for helping with the pic.)
Although I did say, "O.K., I'm (uncharacteristically) exaggerating just a tad", apparently a few people took me too seriously/literally. I've had a couple of requests for the book, and even one of my colleagues asked me when it would be appearing.
Sadly, no book was ever intended - somehow, I just don't think there's the market for it!