A meme is an idea, behavior, style, or piece of media that spreads from person to person, often with the goal of conveying a particular phenomenon, theme, or meaning. The term has evolved significantly over time:

1. Original Definition (by Richard Dawkins, 1976)
• In his book The Selfish Gene, Dawkins coined the term "meme" to describe a unit of cultural transmission — much like genes carry biological information, memes carry cultural information.
• Examples: tunes, catchphrases, fashion trends, rituals, etc.
2. Modern Internet Meme
• A meme today usually refers to an image, video, or piece of text that is humorous or satirical and spreads rapidly online, especially via social media.
• Often altered with slight variations, allowing it to evolve.
• Examples:
  • "Distracted Boyfriend" image meme
  • "This is fine" dog in a burning room
  • Catchphrases like "I can has cheezburger?" or "No one: Absolutely no one:..."