Memes are humorous, viral content spread across the internet, often in the form of images, videos, or text. They are characterized by their shareability, relatability, and rapid evolution, reflecting pop culture, trends, and social commentary. Memes can be satirical, absurd, or ironic, and are easily remixed and adapted by users. They thrive on internet subcultures, community engagement, and can be used to comment on politics, identity, and societal norms.