Skip to main content
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

in the book 

An archaic phrase once used to signify public listings of a person's name, address and phone number in a phonebook.
1. If you need to reach me, I'm in the book.

2. I tried looking you up in the book, but you're unlisted.
in the book by Nickadoo December 11, 2018

In the Book of Mormon 

The definition is based on the Broadway Musical, “The Book of Mormon”

Short for: (person pretending to read Book of Mormon) “And GOD said to Joseph, do not ____ or you will go to Mormon Hell.”
Dude 1: “I’m going to go ass-fuck a baby.”

Dude 2: “In the Book of Mormon, dipshit!!”

Long version of Dude 2, pretending to read the Book of Mormon: “And GOD said to Joseph, do not ass-fuck babies or you will go to Mormon Hell.”

The oldest trick in the book 

A trick most people know about, if you try to trick someone and they say ¨thats The oldest trick in the book, then it means they know what you are trying to do and, to quote Robbie Rotten, ¨Try something else¨.
Remember just because someone knows what you are trying to pull, does not mean they are untrickable.
Also, you should subscribe to Dumbass Dinosaurs on youtube, their content can be a bit offensive, but if you can handle that than I definitely Recommend them.
Guy1: Hey, look over there!
Guy2: Bruh, that's The oldest trick in the book.

Shook in the book 

When you are so shook that it goes in the book. Like you are so shook that it goes on record (in the book).
*shocking event*

Me: SHOOK IN THE BOOK

Just another page in the book

A phrase meaning that whatever is happening now will pass, and you shouldn't worry about it, it will get better.
Friend: My girlfriend dumped me..
You: Just another page in the book.

oldest trick in the book 

When someone tries to trick you with a popular trick.
Dude 1: Hey dude, Press Alt + F4 for free vbucks!
Dude 2: Hell no dude, i aint falling for the oldest trick in the book.
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026
Load more