Top Definition
Jack Daniels, the ultimate rock juice. Period.
The singer drank a gallon of rock juice and then puked all over the stage.
by Rockermate March 19, 2009
A beverage (often any kind of energy drink) a rock or metal musician drinks when they are preparing to rock.
Mike Portnoy of Dream Theater drank 3 liters of rock juice before their concert last night.
by MusicManTL February 26, 2009
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