look up any word, like sparkle pony:
 
1.
Homestarrunner.com's way of showing you fools how to use the internet... 404ing your ass!
<CHILDREN!> 404'd!
<Ugly> Ow, my browser!
by Bastardized Bottomburp June 18, 2003
 
2.
When a web page is intentionally taken off-line, likely due to the documentation of illegal activities or contents.
That /s/ pre-teen page was 404d before I could dl them all!
by 4cheese April 18, 2010