GitHub is a web-based Git or version control repository and Internet hosting service. It is mostly used for code. It offers all of the distributed version control and source code management functionality of Git as well as adding its own features
Go Fork Yourself is a meme that relates to the term "Fork". According to GitHub, a fork is a copy of a repository. Forking a repository allows you to freely experiment with changes without affecting the original project. "Fork Me" is also a well known phrase and many developers use it as a joke.