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A non-alcoholic six pack preferred by people that live a straight edge lifestyle. Most commonly a six pack of Root Beer that comes in a beer-type carrier.
Person A: Hey dude, you going to that kegger tonight?
Person B: Yea, but I'm not drinking cause I'm Straight Edge.
Person A: So am I, that's why I'm taking a Straight Sixer.
by Joshua TX July 29, 2011
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