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A phenomenon that happens when you stare at a computer screen when keybored and you become cross-eyed. You are about to fall asleep, only your eyes are partly open.

Then it appears that the guy staring in the screen is in a trance from the view of another guy.
A Guy: Is he okay?
Another Guy: I think so. He's probably in a screentrance.
by asianguy22 May 31, 2010
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