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1.
Coined by Tom Merritt during TWiT Live (live.twit.tv)'s syndication of G4's Microsoft E3 2010 media briefing.

The video game equivalent of lipsyncing. Typically occurs at major events such as E3, where a game is being demonstrated on-stage. Since it'd be pretty boring to just watch gameplay at E3 (almost as boring as having Britney Spears actually sing at a concert), they put someone on stage to pretend to play.

Raises the stupid level by tenfold.
E3 Audience Member #1: That guy is totally thumbsyncing.
E3 Audience Member #2: Yeah, it's so obviously that guy isn't actually playing. He isn't even moving his thumbs!
Kotaku Writer: OMGZZ GREATEST GAME EVERZZ1!!11!ONE
by Beatlesfan94 June 14, 2010
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