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Someone who, when on YouTube, keeps watching "Related Videos" until he/she can't remember what it's supposed to be related to or where they started.
Adam: Man, last night I watched this sweet video on YouTube about __________ and an hour had passed before I realized how Youtarded I was.

Matthew: Dude you're a total Youtard.

Olivia: Yeah get a job you Youtard.
by Your Zaluu March 04, 2010
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