The sphincter of the internet.
Where integrity goes to die.
...look, another anonymous middle aged fucktwit on 4Chan posted some more pics of cartoon babies having sex...
yay.
by FlowersInMidgar October 24, 2006
A website few people understand.
In a world where even music has cheapened and obviated the concept of irony, 4chan still practices it. It's often hard for even experienced users to tell the difference between their peers and people too new to the website or too retarded to understand it.

You will not understand 4chan AT ALL until you have been there daily for at least two years.

If you go there the first time, leave, and make a post about it on UrbanDictionary saying how immature and awful it is, you have been greatly trolled and deserve to die for your gullibility. While people claiming to be 'oldfags' hate 'newfags', true 'oldfags' appreciate them as the newer and more naive the general crowd, the better camouflage they make for the TRUE Anonymous users.

That said, there is a lot of unjustifiable on 4chan, because the whole point of chan anonymity is for not everyone in the community to be of the same mold. That is what makes it shocking and/or retarded, but also what tends to make it amazingly clever in a way no one who hasn't lurked for years picking up the nuances can understand.

Also, newfags think it is an army or a political movement, it isn't...it's a somewhat ill-concieved attempt at an extradimensional reconstruction of human thought.

Also, it isn't your personal army unless you are good at social engineering, in which case you can trick new members and the weak-minded into doing your bidding.
When I first visited 4chan I was disgusted and confused, but intrigued by its liveliness and manipulability. I LURKED MOAR, and came to understand it. I despise a lot of the content and think a lot of the ideas prevalent there are retarded to say the least, but it does have truly unlimited potential...

...or at least it would if Moot made it current and got rid of the new captchas -_-
by Mr. Jihgfed AKA David D. August 21, 2010
If you are seriously searching up 4chan on UD, then gtfo the interweb.
No seriously, if you don't know what 4chan is, gtfo.
by I'm serious, stop reading. September 04, 2011
Something that A-L (Animal-Lovers) is scared of.

It is a hacking interface and those who are not scared of should be.
Brave A-Ler: !`m 0n 4chAn.OrG(aSm :3)

Wimpy A-Ler: 0mgzz dn`t qo on dat yhuu miqqhtt qett trackeed downnn ndd stalkkeedd!!!1 rawrz
by MysteriousMooner July 18, 2010
4chan is the epitome of satanic degenerency from a christian world view, it is rife with corruption, debaunchery, homosexuality and it is hypothezied that moot is the spawn of satan, 666. Chrisitans commonly refer to 4chan as the devil, as can be seen on popular anti-4chan website www.4chanisthedevil.info.
<Anonymous>Hey have you seen 4chan? That site is hilarious.
<Christian>4chan is the devil dot info! That sites evil bro.
by Christus Fornicaus January 19, 2007
4chan: the beginning and the end of the Internet. 4chan is where there is no logic. 4chan rules the world because the 4chan army anonymous controls all. 4chan's leader is the great one, the owner of 4chan. His name is moot. Anonymous is invincible. Anonymous is everything.
When you enter 4chan you are simultaneously mind fucked, and your childhood is raped.
4chan is the Internet, and all that inhabits it.
by Dukeofsins April 06, 2008
Where Cockmongler is King!
Zardoz says!!! Cockmongler just mongled my cock !!!
by masked milk man January 07, 2005
Beautiful place of fascinating pictures and witty conversation. Maybe.
4chan rules, but what happened to my beloved /g/?
by Jenna December 18, 2004
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