"A Uniform System of Citation" used during law school. Commonly referred to as "bitchbook" and is often the bane of law student's existence. Law Reviews often employ the Bluebook citation metho.

The verb used to describe when a girl invites you over to watch the notebook and then fails to put out. While rare, this is the absolute worst movie date and leaves the guy looking like a complete pussy.

bluebook: noun, /bluː bʊk/
A book which has blue cover and aims to be a blueprint for the uniform citation system. Nonetheless, it has effectively become a book for the unicorn charlie system making people blue - both face and mood.