Subz posted a link to the Not Always Right site earlier, which I haven't checked for ages, so thanks for reminding me :>>

A favourite:

Library - Melbourne, Australia

(I’m sitting at the reference desk when a lady walks in with a beautiful bouquet in one hand, a bag full of freshly-baked loaves of bread in the other, and a ferocious scowl on her face. She comes to the desk and slams down the flowers.)

Lady: *growls* “Flowers for librarians!”

(She slams down the bread, then growls again.)

Lady: “Bread for librarians!”

(She then puts both hands on the desk and leans forward.)

Lady: *snarling* “Now find me a book!”

(If anyone wants to come in and do this to me, feel free.)