A term used to discribe the fuckability of a ugly male or female. The term is measured by a negative money, Depending upon the ugliness of the person.
Bob: look at her!
James: Yeah shes back a book.
Bob: aw, shes not that bad only 5 hundred back a book.
James: Well yeah your right she has a nice ass.
2π 2π
Car business term for when a dealer owns a used vehicle for less than Kelly Blue Book wholesale value.
"We are five grand back of book in that Intrepid, go show them that one."
13π 2π
A car that you owe more than 15k than what itβs worth
Cesar Jackson just pulled up in his back of book Nissan Rogue
To back-of-the-book is to go in the back of a text book to take an answer for a problem you haven't solved yet and sometimes scream out the answer.
Why did you back-of-the-booking question 3.