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....
Dude2: Relax man, you gotta open the book....
by jazzbar October 24, 2011

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

it means you are an easy person to know.
like reading an open book, you can read what the person is thinking or feeling.
like reading an open book, you can read what the person is thinking or feeling.
Jenny: I like you Forest. Do you like me?
Forest: Well, I...
Jenny: You don't have to say it, you're an open book.
Forest: Well, I...
Jenny: You don't have to say it, you're an open book.
by shinviroz February 5, 2009

Used in the phrase My Life Is An Open Book, in the 1990's I saw it online many times in personal profiles when a person was saying they are a student
by cuyahoga September 22, 2019

Being so wasted that all inhibitions are lowered to the point where a person says anything and everything that comes to their mind creating an effect known as an "open book"
by thelonelyston3r July 9, 2010

by ahmedisleosometimeslolol February 2, 2021

by Simplyimperfectxx August 9, 2023
