Definitions by General George S. Patton

Hollaback 

When you're cruising in your low rider, yelling at women hoping for a positive response, a Hollaback girl is a respondee.
(i.e. she 'holler'd back').

Just a guess though.

That Chantelle, every time Dominguez yells to see her top shel, she yells back.. What a Hollaback!

Hollaback by General George S. Patton July 4, 2005