4chan is pretty much the most random, filthy and disgusting place on the internet - but it is pretty entertaining if you have the mental fortitude to wade through the copious amounts of crap to find the sparkling gems of hilarity contained within.
Like these pictures I found:
(There were lots more, but I will leave it to you to discover them yourselves)
And this thread of "unfunny jokes":
A rabbi, an atheist and a Christian walk into a bar. They disagree on the fundamental basics of each others beliefs, but they still enjoy the lighthearted discussion and company.
An Englishman, an Irishman and a Scotsman were in a boat. This was not out of the ordinary since it was a passenger ferry from Liverpool to Dublin.
What's the difference between Madelaine McCann and the Pope? There are so many differences between those individuals that this post is not large enough to contain them all. I would recommend you read their Wikipedia pages and then do some background research to get a full understanding.
A cat walks into a bar and orders a drink. The bartender notes how ridiculous this is, because cats can not speak, nor are their thought processes complex enough to do even something as simple as ordering a drink at a bar. The bartender wakes up and realizes it was all a dream. Grateful to be returned to a world that makes sense, he rolls over and tells his wife, but she does not share his enthusiasm. Indeed, their 26-year marriage has begun to sour as of late. The bartender cries.
Why was 6 scared of 7? Well done if you spotted that that was a trick questions. Numbers are of course not living entities and consequently cannot feel emotions such as fear.
Good times, 4chan...Consider yourself warned though - 4chan is the epitome of NSFW, so much that I am not even going to link you to it. Insane, I know! And if you visit it, don't blame me if you can't unsee something that someone posted on there.