4chan 

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.

4chan by Penguindrum April 9, 2015

4chan 

Some place where little weaboo fags go to pretend they are a part of Anonymous and act like they are interwebs hotshots, also hot shitz. Just because you are anonymous over the internet doesnt mean you ARE anonymous. When president bush goes on the internet, is he anonymous? No. 4chan is a cesspool where little weaboo's go to get preyed upon by child molestys. They think they are hotshots because they get to say naughty dirty racist things on the interwebs and post gross pics (most of which are fake) because they are too fucking weak to unleash their pathetic racist sexist thoughts in real life. The site 4chan is hyped as being this great place where a lot of the internet memes are invented. It seems more to me like a place where internet memes go to die, and also a place where ALL the people who dont and will never understand ANY of the internet memes go to hang out. It is just some hyped website, that in reality is fairly indecipherable and everyone just talks about themselves. Probably because themselves is the only person they have talked to/had sex with in the past year.

There is no example, it's just a bunch of random shit.

(4chan)

4chan by thetruth. October 18, 2008

4chan 

A hacker that is referred to as 4chan, who has perpetrated attacks on celebrities, and has hacked countless major organizations.

Who is this 4chan?

4chan by BiggestBoy May 10, 2018

4chan 

an overrated and hyped-up website, 4chan mostly consists of a bunch of dorks (who are all anonymous since there are no registered usernames) posting boring pictures of anime and naked chicks.

after reading the top definition on urban dictionary, i thought i was going to be awestruck by 4chan. instead i discovered it to be lame and uninteresting.

4chan by bumbleclot February 12, 2009

4Chan 

A mistake

4Chan is a mistake

4Chan by Pastiiles March 4, 2019

4chan 

A group of partpoopers

hey look at this guys awesome thread..
LETS POST LOLIPORN AND CARTOON BABYS FUCKING EACH OTHER ALL OVER IT
4chan

4chan by fefefefsefwesfefsyhhrtrtj May 26, 2013

4chan 

Urban Dictionary but in picture mode

4chan is the physical image version of what you get when you type "sex," "porn" or "hentai" on Urban Dictionary but 10000000000000000000000000000000000000000000000000000000000000000000000000000 times worse.

4chan by unnamed7billion September 22, 2020