Separately, hallelujah means praise the Lord, while hollaback means reply. So, combined, it means praise the lord for answering my prayers. Usually used when the Lord sends a fine piece of booty across your field of vision.
Leeroy: Daaaaaaaaammnnn look at that fine piece of booty...
John Brown: Hallelujah hollaback!
by huy tha eskimo March 14, 2007
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