This amused me :-)
Hyper Text Coffee Pot Control Protocol
418 I'm a teapot - The HTCPCP server is a Teapot - "short and stout"
If you don't get the reference, it's from the children's song:
"I'm a little teapot short and stout.
Here is my handle.
Here is my spout.
When I get all steamed up,
Hear me shout!
Just tip me over
And pour me out
I'm a clever teapot, yes it's true.
Here's an example of what I can do.
I can turn my handle to a spout.
Just tip me over and pour me out"