Unofficially, I have a stack of them in my loo. Don't you? And I have to say my selection is strikingly good, so I thought I'd share them with you (not literally, I'd rather you didn't all come round to use the loo).
In no particular order:
Sum: Forty Tales from the Afterlives, by David Eagleman
Exactly as the subtitle tells you, this comprises forty very short stories about what might just happen to you after you die. So, for example, story one: "In the afterlife you relive all your experiences, but this time with the events reshuffled into a new group order: all the moments that share a quality are grouped together. You spend two months driving the street in front of your house, seven months having sex." And so on. It is a work or genius, irritating genius, given that the author is also a neuroscientist. You should not be able to be this good at two things. (Maybe he is a shit neuroscientist.) Loo rating compromised by the stories being a bit too long. This is really one for extended trips, when nobody is waiting outside for their turn.
100 Facts about Pandas, by David O'Doherty, Claudia O'Doherty & Mike Ahern
Panda facts include: "36: Since Louis XIV proclaimed panda meat to be 'juicier than lobster and tastier than peacock', it has become tradition for the departing French heads of state to be served panda as their final meal. President Jacques Chirac enraged animal protection groups when he held four rehearsal diners before his one official panda meal. Chirac dismissed the protests, saying his roux chef 'needed to get the sauce right'." Loo rating high: only a few seconds per entry, and pretty pictures too.
Dr. Johnson's Dictionary of Modern Life: Survey, Definition and Justify'd Lampoonery of Divers Contemporary Phenomena, from "Top Gear" Unto Twitter
By Book Swap alumnus Tom Morton! The title of the book is longer than most of the entries, which savvy tweeters will already be familiar with (follow @drsamueljohnson) but for the uninitiated: "ABBA: n. four Quaterns of Vikings most obvious in Rhyming Couplets; yet most mysterious as to who is the FIT ONE". Loo rating: bonus points for including longer themed disquisitions on topics including C is for Celebrity or E is for England, so that loo visitors may adapt length according to need.
Mistakes in the Background, by Laura Dockrill
Picked this one up at Book Swap. I always like to have some poetry in the loo; makes me feel sophisticated, and also means that I might read some poetry maybe. I don't really read poetry. I haven't read any of this. Sorry Laura. But I love the cover, and it has free stickers. Loo rating: unknown.
Would You Rather...: Over 200 Absolutely Absurd Dilemmas to Ponder, by Juston Heimberg & David Gomberg
Given to me by my sister in honour of our childhood game where she'd invent horrible 'would you rather' dilemmas for me. These are excellent, although rely slightly too heavily on American cultural references for the average British punter. Loo rating: quick to read, but you may be stuck in the bathroom for hours trying to decide on: "Would you rather: have a variety of dyslexia where anything you try to read becomes a page from 'Yes, I Can', the story of Sammy David Jr OR have a bizarre sleep disorder where you always wake up on a train to New Orleans?"
Venn That Tune: Bringing the Poetry of Maths to the Magic of Pop! by Andrew Viner
You're going to need a visual aid for this one:

Loo rating: high, but you might accidentally read the entire book in one sitting, as it were.
They Call Me Naughty Lola: The London Review of Books Personal Ads: A Reader, edited by David Rose
Not only my favourite loo book but one of my favourite books of any variety. A friend of mine once emerged from my bathroom after quite some time and announced: 'You have a loo trap in there.' She meant this book. "You're a brunette, 6', long legs, 25-30, intelligent, articulate and drop-dead gorgeous. I, on the other hand, am 4'10", have the looks of Herve Villechaize and carry an odour of wheat. No returns and no refunds at box no. 3321." (In the footnotes, the book helpfully gives a potted biography of Herve Villechaize, aka Nick Nack from The Man with the Golden Gun, for those unfamiliar with his work.) Loo rating: unbeatable.
The Frozen Thames, by Helen Humphreys
A gorgeous little book I picked up when touring Gods Behaving Badly in Canada, it comprises a series of short stories set on those occasions when the Thames froze over completely. Loo rating low: they're really too long to read on the loo, and I should move this book to somewhere it will be better appreciated. Like the bath.
Binky's Guide to Love: A Little Book of Hell by Matt Groening
Time for another visual aid:

Loo rating: excellent. Emerge not only physically relieved, but spiritually cleansed of all romantic bitterness.
And there we have it. An exceptional selection, I'm sure you'll agree. What books do you have in your loo?

