It's not, actually, but perhaps it should be. We had a plumber in the library today fixing one of our men's restrooms. In the course of his repair work, he had to go into the drop-ceiling in the bathroom, and this is what he found:
I've heard of library bathroom ceilings being used as dead-drops for drug deals - which at least has a logical utility - but I don't understand why these books would have ended up in the bathroom ceiling.
They all seem like old travel books, had been part of our branch library's collection, and have all been withdrawn and deleted. Not just lost and deleted, but actually stamped by staff as withdrawn.
I have no idea how they went from deleted from the branch to above the men's room of the main library. Plus, it's a ten foot ceiling too, so it's not like it'd be an easy place to store reading material.
So, if you get a chance today, pop your head up into the bathroom ceiling - who knows what interesting things you may find (I for one can't wait to check the rest of our bathrooms).