Can be either:

1) A derogatory term used by an internet/computer techie, to describe a non-techie.

2) A derogatory term used by non-techies to poke fun at internet/computer techies.

Originates from an internet error message.
1) That 404 doesn't know HTML! And he only has 64 megabytes of RAM!

2) Look at the 404 all by himself... his only friend is his laptop.
by vavie January 04, 2004
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A sixties car made by Peugeot.
The 404 came out in the sedan, wagon, pickup and cabriolet bodies.
by Individuo August 08, 2006
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The polite, simple, and generally geeky way of saying: "LOLZ @ U! DA PG U R LOOKIN 4 AINT UP 4 GRABZ BOI... GUTTED M8."

These message is usually only understood by people who are experienced in the use of compueters and understand its terminology, yet it is only ever encountered by the computer-illiterate, thus making it pointless.
"Error 404 has occured... cri moar"
by Dr O'Maw February 08, 2007
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1. crazy or stupid

2. I don't know. (used in text messaging)

(from the computer message that appears on the screen when the browser fails to find the web site's server)
by The Return of Light Joker August 30, 2008
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