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A slutty girl that goes from room to room in the shacks (military barracks).
Jim is screwing a shack rat in his room. I had her last tuesday.
by Paul McAllister April 21, 2004
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2
A slutty girl that spends all her time in " the shacks" aka military housing, sleeping around with every single pongo.
Geez, those girls from that small town of Chapeau sure are shack rats. Seen 2 of them leaving the base this morning looking like they were rode hard and put away wet.
by Jake Parkbench March 12, 2011
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