I had both Dawkin's definition and internet memes in mind as I wrote this, since I don't think they're so different in the end. A meme (even in the modern sense) doesn't have to be a funny image: In can be a practice, like rickrolling; a text like copypastas, a story -true or fictional, like "operation baja-blast" or creepypastas. Some combine several of these things, like the meme "loss.jpg" contains the comic's story, it's pannels, and the behaviour of hiding the loss symbol or finding it. All of these things are also what religions are made off!