"Established in 1978 by the Diagram Group as an antidote to the tedium of the Frankfurt Book Fair, and now presided over by the Bookseller magazine, the Diagram is awarded annually to the most bizarre book title"--Dust jacket.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Baboon metaphysics : and more implausibly titled books. ISBN 9781845134983. Published by Aurum in 2009. Publication and catalogue information, links to buy online and reader comments.
