We're giving away the kick-ass book "Roller Girls," which features the photography of Susan Moss.

This book is a trackside take on the rough and tumble world of roller derby, as its rockin' revival gets up to speed across the continent. Chronicling the newest generation of beautiful bruisers, the original photos within capture the thrills, chills and spills of the modern bout, along with the inside scoop on roller lingo, roller rules, and roller history.

Interested in winning a copy? We thought so. Here's how.

Step 1: Watch the video and take note of all the awesome nicknames e.g. Georgia W. Tush, Mustach Rides, or our favorite, Heartless Bitch.

Step 2: Come up with your own badass Roller Derby nickname, and tell us what it would be (in the comments section of this post.) Or, if you're already a Roller Girl and have a wicked nickname, tell us what it is.

The person with the best name wins the book!