What a fab, fab book! It was recommended on here about 3 days after a friend told me about it (one of her ex-colleagues is in it!), so I bought it with my birthday money.
It is brilliant. I keep laughing out loud, and when Mr FtG asks what I am laughing at, and I try and read him a bit, I struggle to get to the end without laughing too hard to continue reading.
It's very short, and quick to read, but highly recommendable. Might be good if you have a short, bitty commute where you don't have time to get into anything. (As long as you don't mind laughing in public).