from the HTTP error "file not found on server" Extended to humans to convey that the subject has no idea or no clue - sapience not found. May be used reflexively
by Biohertz January 30, 2003
Geek slang for someone who is clueless or doesn't understand something. From the web page error "404 not found".
by MawBTS May 02, 2007
Got to my girlfriend's house last nite, but that was a 404.
Don't bother trying, it's a 404.
Uh, not a 404 again!?! I've been trying all day!
Peter is a complete 404.
Don't bother trying, it's a 404.
Uh, not a 404 again!?! I've been trying all day!
Peter is a complete 404.
by shonny March 05, 2007
In the early days of www, at CERN in Switzerland, the fault-tracing team was based in room 404. That's where the problems went to.
by johnhms July 12, 2008
by narcolepticdoc February 14, 2012