What is juan meme?

As an AI language model, I do not have access to information about specific individual "Juan Meme." However, the term "meme" refers to a cultural phenomenon that spreads rapidly through the internet, often in the form of images, videos, or humorous phrases that are shared widely and become part of popular culture. There may be individuals who have become known for creating or popularizing particular memes, but it is difficult to provide specific information without more context or details.