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1.
When you are on the computer and the hand you use the mouse with gets cold while your other hand remains warm.
Despite having computer hand, Mansour still was on the computer looking for shoes he will never get

Maha: Sour, why do you have only one glove on?
Sour: I was getting computer hand, so I'm hoping this glove will make it go away. Does it make me look like MJ bro?
by Mansour131 January 14, 2010
 
2.
The use of the hands to pretend type on a keyboard. often as used in story telling.
CM is likes to do computer hands when telling stories about his online Voyeuring.
by LouDoggNM October 02, 2009