Alright, I need some help here. I've definitely been around the Internet quite a bit, but I don't think I can figure every single meme hidden in this picture. Like that poster to the right of Pedobear. What's that about?
You can click the image for a bigger version.
Update: As some of you have pointed out, this image is a collection of memes loved by the fantastic folks of reddit and created by the talented licenseplate as part of the reddit secret Santa gift exchange. Licenseplate actually emailed me to say that there is a "final version" of the poster coming soon (and it sounds like it'll include even more of the craziness adored by redditors as well as the rest of us.) So, we'll keep an eye out.