As I've mentioned, LOLcats is just a cuter version of Caturday, an old forum tradition of posting cat pictures with captions in broken English on Saturdays. Caturday itself is just a more formal version of the image macros that have floated around ever since the Internet found pictures. Every popular Internet meme is in fact a lamer version of a more obscure one, including Lazy Sunday, the Rickroll, Badger Badger Badger, Hot or Not, Ask a Ninja, and Chuck Norris Facts. I've traced them back to their edgier ancestors.