lolcat

noun

Etymology: From lol + cat.

1. An image macro of, usually, a kitten or a cat with a humorous caption.

   “I had heard of Caturday when I wrote the piece, but I’d understood that it was a proto-lolcats practice that was different from the actual lolcats meme.”

2. The deliberately misspelled and grammatically quirky form of English associated with such images' captions.