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The watching of three separate trilogies in a marathon-style manner. Usually done on a scheduled date with a group of friends and a large amount of caffeine and snacks. No series can exceed 3 movies (Can't watch all six Star Wars and the Back to the Future films). They must be at a 3/3/3 Ratio.

Pronounced like "Tripple-Trilogy" without the "pple"
Dude, lets do a Tri-trilogy this weekend! Bring the Dew!
by KyrakThePoet July 17, 2010
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