I could tell you all about how I haven't slept well (nightmares, ugh), I forgot my school keys at home, my co-librarian had car trouble and was late today (and will be away at a conference the rest of the week), and the secretary called in sick (and we don't know whether to be concerned or P.O.'d that she played hooky to avoid dealing with the used book sale), or all the other pressure going on with grades and end of the year stuff that I'm just starting to comprehend, picking up cat meds and the chemo pills that arrived in an insulated bag with (melted) ice packs. . .
. . . but I'd rather provide you with something enjoyable. Go watch CCR's cool video find about making a book way back in the olden days of 1947. Pop some popcorn and show a kid. I might see if I can put it up for the fourth graders to see what they know about how a book is made. (Well, there is a section of the curriculum about the history of books!) It'd probably blow their minds.
Or confuse the heck out of them. *shrug* Fun either way.