You want to know how long Lord of the Rings memes have been popular? Well, you might think they started with the rise of social media, when people began posting and sharing memes on their timelines, but it actually began much earlier. We're talking while the movies were still in theaters. Return of the King came out in December 2003, and by January 2004, we already had our first big meme template that had caught the attention of most internet users—"One does not simply." This was quickly follow…