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The event of gathering different selections of fast food from 3 or more fast food restaurants and then consuming them with a group of friends. Usually consumed while watching copious seasons/parts of a certain TV show or movie, but does not necessarily need to be.
"Lisa, Bernard, Helen and I had a fastfoodathon last Saturday since I've just bought the Game Of Thrones 1-4 box set."
"Well, that explains why this entire room is filled with the smell of Taco Bell, Mcdonald's, Burger King, Wendy's and poor decisions all at the same time! Invite me next time!"
by SaltyRage May 04, 2015
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