Angus's "bookshop" in "Funny Cow". When did you ever see a second-hand book shop with all the books labelled with a small white sticker at the bottom of the spine? On the other hand, when did you see a library where all the books didn't have a small white sticker at the bottom of the spine?
I liked the joke: Did you hear about the dyslexic devil-worshipper? He sold his soul to Santa.