The condition that arises when one spends a great amount of time working behind a computer such that communication with a human is a challenge and often degraded. The condition can be identified by one's inability to answer simple questions such as "Want to go to lunch?" or "What are your plans for the weekend?" A typical reply would start with "Umm" followed by a stuttering and slurring of words resulting in a lack of ability to carry a conversation with a human.
Colleague: "What are your plans for the weekend."
The Reply: "Umm, yeah. The weekend? Yeah. What about it? Is that tomorrow?"
Colleague (still hasn't given up on the conversation): "Have anything fun planned?"
The Reply: "Uhhh -for what?"
Colleague: "Man, you're stuck in computer mode."