Meme coins are cryptocurrencies inspired by internet jokes, trends, or pop culture, often created as a parody or for entertainment. The most famous example is Dogecoin, launched in 2013 as a joke but later gained popularity thanks to community support and celebrity endorsements like Elon Musk. Other examples include Shiba Inu, PepeCoin, and Floki. Meme coins typically have high volatility and limited utility but attract investors due to their viral appeal and speculative potential. While some see them as fun and profitable, others warn they can be risky with little underlying value. Always research before investing in meme-based assets.