404'd 

Homestarrunner.com's way of showing you fools how to use the internet... 404ing your ass!

<CHILDREN!> 404'd!
<Ugly> Ow, my browser!

404'd by Bastardized Bottomburp June 18, 2003

404'd 

When your significant other won't let you in the back door.

"Hey, did you get some last night?"
"I did, but when I tried to go in back door, my dick got 404'd"

404'd by KUJ August 3, 2016

Derivation: the "404: Not Found" error encountered when surfing the web. 

You've reached the end of the Internet. You may now shut down your computer and go outside.

There's nothing more to see here.

Derivation: the "404: Not Found" error encountered when surfing the web. by shill August 2, 2005

darkfire 404 

a dumbass youtuber who sits in their room all does and drinks coffee (is also a cat)
their best-friends are willowtree9 and soulen07.

"DARKFIRE 404 YOU CANNOT SNIFF THE MYSTERY LAUNDRY WATER"

darkfire 404 by darkfire 404 (a dumbass) November 10, 2020

Dogpack 404 

A youtuber who made a decent video exposing Mr. Beast, but eventually devolved into doing videos with Rosanna Pansino where they made unverified and slanderous claims

"dude, did you see the new dogpack 404 video?"

"Nah he's become unreliable now"

Dogpack 404 by Anonymous Anon 1886 November 2, 2024

404d 

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!

404d by 4cheese April 18, 2010