Dawkins coined meme to mean just such a cultural piece of information that disseminates. Just as a gene wants to get to as many people as possible (ie natural, sexual selection) so too do ideas. In this case, the internet has vastly sped it up such that ideas can travel instantaneously.
It's not only that that ideas travel, but also how they evolve and adapt like a virus to be in the most potent and engaging version, not too dissimilar from natural selection. It also is true that they are much easier to spread than to cure (debunk).
Unfortunately, bad ideas also, like that meme should refer to a low-effort combination of some stock picture and some caption conveying puerile humor or a subcultural circle jerk.
