User blog comment:Nelfen/Copypasta wiki?/@comment-4295646-20110923224536/@comment-4295646-20111004151128

There are two different ways in which the word is used, but the simplest way to describe an internet meme is that it's like an in-joke or fad, used and recognized within certain communities. Sometimes the meme can spread to widespread popularity. Like that Chuck Norris thing that was funny like. . . five years ago.