When you work in a library and wander through the stacks to get to other areas of the library, usually if you're not actively paying attention, the titles showing on book spines sort of blend together and you don't really notice them unless the book is a significantly different color or size than its neighbors. However, as books are continually being shifted from shelf to shelf as we rearrange, weed, purchase new, and so on, things change ever-so-little each time you wander by, and so a book title that's new to you may pop off the shelf at your eye as you're walking past at any moment.
And that is how today, when walking to the staff break room, I spotted The Antichrist's Lewd Hat. I'm not even sure I want to know what's in the book, as that is such a title. Knowing what's in it may just spoil it.