Shortly before WWB's first volume was published, the mangaka did a countdown with a series of images. Alone they make little sense but when placed in sequence, you'll realise that it's actually a comic strip, posted one per day until the date of publication.
Posted here is the comic in its entirety. Krusty's fans, you might want to avoid it like the plague =D
http://imgur.com/a/aWHFt