The origin of almost any fucking internet meme you can think of. Site is filled with taboo porn, stupid pictures and other stupid shit.

A couple of examples include the Rick Roll and the motivational pictures. This site has gotten pretty old, and should die immediately because everything they put out is no longer funny, amirite?
4Chan is the source of all the stupid memes you see these days.
by Stay Gold Ponyboy September 06, 2008

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4Chan is, as many would say, the asshole of the internet.

Aside from this, 4Chan is also where every meme ever came from. Many of the things on 4Chan are horrible things (such as goatse). The very few gems that are actually funny make their way to other places on the internet.

This site is home to many Trolls, who use things like goatse and /That Series/ ("Of Warlords and Pleasures"), and other things that cannot be unseen to terrorize other sites through obscene spam. Most of these things are on /b/, which is basically the armory for Trolls. I recommend that, if you feel the urge to visit 4Chan, you leave any religious beliefs, morals and etcetera behind. Also, please make sure there is nothing nearby for you to kill yourself with, becaue you /will/ lose all hope.

Much like the Fight Club, you do not talk about 4Chan. Not ever.
Guy1: What's 4Chan?

Guy2: The asshole of the 'net.

Guy1: What?

Guy2: You really don't want to know, trust me.

Guy1: Yes, I do.

Guy2: Okay then... *brings up 4Chan on laptop*

Guy1: OhmyfuckingGodkillit! No, wait, kill me! There is no hope!
by Al Golston November 19, 2011

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4chan is gay as hell
I hate 4chan
I hate 4chan
I hate 4chan
I hate 4chan
I hate 4chan
I hate 4chan
I hate 4chan
I hate 4chan
I hate 4chan
I hate 4chan
by Pyromaniac1 September 20, 2007

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A place where all the faggots and autists of the internet live and try hard to look cool by trolling.
Fag 1: lol im on 4chan calling ppl newfags cuz im cool
Guy: Kill yourself you abomination.
by flutt September 18, 2013

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the website where i saw an infant being medically extracted from a male ass, and people liked it
4chan is strange
by fdhsrhdfj October 24, 2012

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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.
4chan is dangerous and omniscient website.
by Roflknife34 December 27, 2012

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A place on the Internet where it's cool to be ignorant, about things such as genocide--which leaves Tumblr users in a sissy twist, whatever that means.
4chan User: Communism is not a scam! Adolf Hitler died for us, just so he could carry out the New World Order!
Tumblr User: Wow, check your privilege already. It's not funny to make fun of the 40, 000, 000 Jewish people who died during such a dark time in history.
by Penguindrum April 09, 2015

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A group of partpoopers
hey look at this guys awesome thread..
LETS POST LOLIPORN AND CARTOON BABYS FUCKING EACH OTHER ALL OVER IT
4chan
by fefefefsefwesfefsyhhrtrtj May 26, 2013

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