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2.
A gamer that refuses to use other video game systems other than ones manufactured by Nintendo.
Billy: "Hey guys I just downloaded all the Legend of Zelda games for my Wii."
Joe: "Gosh you're such a Nintentard, we're going to play some Modern Warfare 2!"
Billy: "Fine, I'm gunna beat the Ocarina of Time again!"
by djmazerocksmycock September 26, 2010
 
1.
Someone who gets offended by jokes involving Nintendo. This is worse than Nintendo fanboys.
Man, Joe's a real Nintentard. He said Halo is a copy of Metroid, only more violent and XBox exclusive.
by Litbut October 02, 2007