What's on your mug?

Another word for cool, started from mistakenly sending the message book before hitting zero during the act of T-9 messaging.

Person 1: Did you see that sweet ride? Person 2: Yeah, it was book bro.

By DCHphotography

The peak of being cool, only apply to a small group of people

James acts like he is so Book, it's so embarrasing. But we all know that Belle and Mel and the Book ones.

By sparetimeonmyhands

Something that makes you want to die it's the 21st century get an audio book

Oh look its John reading a book

By Sugargay

a thing from 100 bc that is dead

books are dead

By Guardian Spoon

Synonymous with "cool." Used only by really hip people between the ages of 18-25.

You look so book with that backpack.

By Marcus Ripley