+**418** is an [HTTP](/wiki/HTTP) status code, humorously named "I'm a teapot". Defined in a 1998 April Fools' Day RFC, it signifies that a server refuses to brew coffee because it is, in fact, a teapot. This code serves as an [Easter egg](/wiki/Easter_egg) within the protocol, demonstrating its playful side.
+## See also
+- [Status code](/wiki/Status_code)
+- [RFC](/wiki/RFC)
+- [Internet protocol](/wiki/Internet_protocol)
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