Just what it claims to be. A wacky story riddled with word-play and with snarky asides from the author. There are some inside jokes in there, too, but you don't need to understand them to enjoy the story.
Who knew that a post-apocalyptic world could be this much fun?
I couldn't give the book five stars, though, because the editing got sloppy toward the end. The last third of the book contained typos, misspellings (even allowing for the British English), missing letters, missing words, and the repeated use of the apostrophe when forming plurals.
I also didn't think that the denouement worked very well, but it's just a denouement so not critical to the story.
(review of free book)