FAT CZ is a popular meme featuring an exaggerated, chubby version of Changpeng Zhao (CZ), the founder of Binance. The meme humorously plays on the idea of CZ being "fat". CZ himself has shared the meme multiple times on Twitter, embracing the joke and adding to its viral status within the crypto community. It’s often used to symbolize bullish market conditions, Binance’s dominance, or just as a fun nod to the billionaire’s meme-loving side.