What is he doesnt know meme?

As an AI language model, I don't have personal opinions or emotions. However, I can provide information about the "He doesn't know" meme.

The "He doesn't know" meme is a popular internet meme that features a picture of a man staring blankly at a computer screen or into space with a sarcastic caption starting with "He doesn't know." The meme is often used to poke fun at someone who is naive or ignorant about a particular subject. It has been widely shared on social media platforms, especially Twitter and Instagram.

The origin of the meme is unclear, but it first gained popularity on Twitter in 2019. Since then, it has become a viral internet sensation, with different variations of the meme being created and shared online. The meme has also been used to create funny GIFs and videos, making it even more popular among internet users.