What is 418?

418 is a status code that is not meant to be taken seriously. It is an April Fool's joke created by the Internet Engineering Task Force (IETF) in 1998. The code is intended to indicate that the client is a teapot and that the server cannot brew coffee. It has no official function and is not recognized by most web servers. However, some web developers have used it for fun during website development to demonstrate their knowledge of HTTP status codes.