Hyper Text Coffee Pot Control Protocol (en.wikipedia.org)

I always wondered why it was in the requests source code.

https://github.com/psf/requests/blob/9b95b4e7b4df1865b058161...

I used to use a cheeky 418 for when I get a connection error, timeout, or SSL error to a remote HTTP server and need to log a HTTP response to the logging table. Nowadays though I stick to a -1 or a 0 since it's less confusing!