reveal the inner workings of a project or company to a prospective new partner.
Anytime Mr Johnson wanted to open the books and initiate a new member, he, alone, didn't need the others' approval.
by coletto January 22, 2008
A term used to describe the loosening of one's ego when tripping on LSD; can also be described as easing ones objective rationality when tripping.
Dude1: Hey man that doesn't make any fucking sense, you know what I said makes perfect sense!!
Dude2: Relax man, you gotta open the book....
by jazzbar May 30, 2011

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