I'm the author of an April Fool's Internet Standard, AMA
Let's get the AMAs kicked off on Lemmy, shall we.
Almost ten years ago now, I wrote RFC 7168, "Hypertext Coffeepot Control Protocol for Tea Efflux Appliances" which extends HTCPCP to handle tea brewing. Both Coffeepot Control Protocol and the tea-brewing extension are joke Internet Standards, and were released on Apr 1st (1998 and 2014). You may be familiar with HTTP error 418, "I'm a teapot"; this comes from the 1998 standard.
I'm giving a talk on the history of HTTP and HTCPCP at the WeAreDevelopers World Congress in Berlin later this month, and I need an FAQ section; AMA about the Internet and HTTP. Let's try this out!
The fact that otherwise non-technical people joke about staying in hotel room 404 just shows how pervasive the modern Internet has become. As an aside, it also shows the importance of a good error message; there are some errors (like "Not Found") in HTTP that are simple and clear, and some ("Bad Gateway"?) that are more impenetrable.
No-one jokes about staying in room 504, and the room service never arriving.
(And perhaps one of the larger Lemmies can get a hold of Victoria, get these AMAs going for real.)
It's discontinued as a code, but perhaps we could get people using 102: Processing as a response online when someone says something unexpected or stupid-sounding.