This ancient topic has been resurrected from the ashes of the intarwebs. When /b/tards did not exist and normalfags just wanted to lol before the internet hate machine ate them, turning them into the ancient newfags who lurved teh lulz, there was this topic: You raff, you ruse.
TL;DR It's a you raff you ruse thread.
Pretty much, here's how it goes:
1. Find an image.
2. Post it here as a reply.
3. Look at other images.
4. If you laugh (raff) you lose (ruse).
5. Post if you lost along with your image.
6. Repeat step 6.
7. ???
8. PROFIT!