Funny and clever.
A bit too long to really hold my attention since it was pure silliness. There were whole pages where I was like "wtf just happened?", but there were many turns of phrases and unexpected chortles to make it well worth the read.
The thing about a book like this is that it's relevant NOW, so if it's on your to-read, there's no time like the present. Literally. It might not be as amusing in the future when new books are the it thing and hot-topics have gone lukewarm.