Attending a social event that is not necessarily a party, but wherever you are present there is a mini shit show happening.
Man, I definitely had 10 too many drinks at my high school reunion. I was trashfesting while everyone else was speaking of their great jobs and kids.
by wildlime July 21, 2014
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