A message board and image board on the Internet where people congregate to post various kinds of pictures, flash animations, and discuss things such as anime. It is the English version of the original Japanese board with a similar system: 2chan.

The system that 4chan uses is Anonymous, so one can safely post one's opinion without worrying. One can use a name and a tripcode (a # followed by a 'password') to gain 'status' on 4chan.
Did you see that insane Flash movie on 4chan?
by a_grilled_fish January 12, 2005
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This is where the trash of the internet come out to play. What they post is exceedingly derogatory and immature. Most people, the completely sane minds, would not stray too far into it.
4Chaners should not have their own website to expoloit what they do.
by XoXKissuOxO June 8, 2009
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A place made by satan with all his followers on the site. All of the stuff is fucked up and you don't want to see it.
guy1: hey what site did that guy post those j law nudes??
guy2: 4chan of course
by Rumsonfairhavenboi June 2, 2015
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A place where you can anonymously you can post sins and crimes.
person 1: I just saw a baby with a knife on 4chan
person 2: Wow that's crazy did it get hurt?
person 1: No it hurt others...
by Crystal2Gamez March 7, 2022
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4chan is hell. The congregation of all assholes, pedophiles, creeps, hackers, and others on the internet. Memes spout from it, and spread quickly. 4chan is like a gigantic titan that should be either killed or locked away in Oblivion.
"LOLOLOLOLOLOL HAXXORZ N00Bz LAWLZ." <typical 4channer.
"dud did u c tht n00 picceh on 4chan lawlz" <even more typical 4channer
Me: "I hate you all."
by tigerdude37 March 1, 2008
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The most fucked up,pedophile-infested website on the internet. It is an english-translated pornography imageboard with the japanese form 2chan. its best,more like worst, image board is called /b/, where it mostly contains of child pornography, sexual jokes that aren't even funny, and memes that lose their popularity 5 minutes after it is created. In fact, this website is SO fucked up, that, for example, on subeta, a gaia/deviantart/neopets website, has been hacked by stpid fucking anonymous, a fucking pedophile and moot, some stupid fucking anthro hello kitty ripoff. just because subeta took the longcat (meme on 4chan) meme, so 4chan got all mad and hacked into subeta's creator, keith's paypal and bought 3 playstation 3's and the first season of the fresh prince of bel-air with his money. 4chan also hackec gaia people who used subeta by hacking into a gazillion accounts and posting pictures of dead cats.

4chan fucking sucks.
4chan whore:lulz moar pedobear is gonna get you

anti4chan whore: fuck you get a life you fucking pedophile
by 4chanBlowsSeriousDick June 14, 2008
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The birth place and the death bed of the internet. It where things are created and where things are destroyed. It is all powerful and knowing and for one to survive in its culture, they must leave behind all previous thoughts of normality. What's happens in 4chan, stays in 4chan, until posted anonymously elsewhere.
by Roflknife34 December 27, 2012
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