MOOKDFJLAL

Take a photograph in your bedroom with a pillow on your head. Upload this photo to the internet (like on Flickr). Tag the file with: MOOKDFJLAL. When you search for MOOKDFJLAL you will find photographs of people wearing pillows on their head. David Horvitz, May 18, 2009

If you search for 241543903, you'll find another Horvitz creation ("people putting their head in the freezer."). It's been called a "meme", but I feel like that's a secondary characteristic of this entity. Memes have origins you can point to and say, "There, look at that — isn't it funny? That's why everybody's been copying it." But 241543903 and MOOKDFJLAL exist primarily because of the photos, not because of David's original instructions. This is coherentism in action.