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 7, 2008
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Over-rated and Over-hyped image board, christians seem to think it's satans playground and the users seem to think they are part of an internet underworld, neither is true.
The posts range from childish anime to sexually related images to .. just about anything with replies ranging from "FAP FAP FAP" to "no GTFO".
Post's are made under the name Anonymous and typical age seems so be mid teens and people with the mental age of a mid teen oh ... and peado's and people who desperatly want to be cool but fail.
Taken directly from a 4chan post:

Guy 1: Well hello
I was trying to find the scariest game ever but after looking the scariest shit seems to be somewhere between Alien versus predator 2 and system shock
That's crap
Give me the scariest fucking game of all time and space

Guy2: Bumpity Bump
by AKA Anonymous April 23, 2009
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A place where morals, basic human rights and anything ethical is left out the door. Be ready to find pedophiles, racists, white supremacists and anything unethical and probably illegal everywhere.
4chan is trash
by Handle_𝔦𝔱 June 3, 2020
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A gay website containing gay pictures e.g. goatse. The creators of 4chan are nothing but fucking faggots.

P.S. 4chan sucks cock!
I fucking hate 4chan.
by wills0 June 22, 2010
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Also known as the asshole of the internet. There is so much shit on this website, that if you continuously refresh your browser, you will see some random ass entry even stupider than the last. This site is divided up into approximately 485785786785476 sections, each with its own random abbreviation. For example the section titled "Random" is abbreviated as "/b/".......... why the fuck this is, we dont know.
4chan is the most ridiculously ridiculous site you will find out there. if your bored out of your skull and need a quick laugh, go to this site right fricken now.
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A bunch of hackers, furries and loners (usually not by choice) who think they invented every internet meme there ever was.
See any meme, then look on /b/ Someone will take credit for it. Fuck 4Chan
by Fuckuintheface December 1, 2009
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Your above average gathering of the low lifes from the internet. Noobs, script kiddies, pedophiles and other such things spawned from the depths of the internet gather here and pool their brain power together to create, 4chan. (Single spawn-of-internet creature does not have mental capacity to put a website together)
Warned, associating one self with 4chan degrades you in such way which you will never recover. Once classed as a 4chan worshipper you will be outcast for the rest of you life as a noob
Ew, its a 4chan worshipper.
wth you on 4chan for, you feeling stupid today?
4chan hacked you? haha, you must really suck - 4chan are all muppets.
by Anonymu September 3, 2007
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