These images, still or animated, constantly changing at an unusual pace, invade the web and social media, giving meaning to what sometimes cannot be expressed in any other way. Until now, few researchers have focused on a phenomenon recognized as typical of contemporary digital culture. Although sometimes viewed with disdain by some, this new manifestation of pop culture conceals a complex world, one that must be explored to grasp its richness. Because while memes are humorous forms of expression, they reveal much about the world, the news, and ourselves. They are used not only to mock, but also to denounce, to support a cause, or simply to express our fears, as we have seen during the pandemic. Popular, proliferating, and massive, meme culture deserved to be deciphered. Semiotician François Jost dissects its mechanics here, revealing its mechanisms, uses, and social and political roles in a particular study of our digital lives.