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Deriving from the term Trashbag, the Australian term trashfest, is the event at which a trashbag displays all aspects of party-animal like behaviour that allows them to proudly call themselves a 'Trashbag'. i.e at a party or the races.
"We had the biggest trashfest last night, I fell asleep on the roof and somehow aquired a pet spider monkey."
by budhist punk June 19, 2009
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