The word was derived from all of the underground music, such as Anticon, associated with the rollerblading world compared to the many mindless musicians and bands like 50 Cent, Coldplay, and The All-American Rejects whom the average friend gobbles up, never realizing the intellectual greatness of the underground.
This mirrors the world of rollerblading because of the lack of common knowledge most people have of it.
Rollerblader 2: Naw man, I'm hangin' with mainstream friends.
Rollerblader: Could you name one pro rollerblader?
Mainstream Friend: No.
Rollerblader: That's what I thought.