If you've spent any time browsing the web, chances are pretty good you've run into a page with an error code on it.
You've likely seen numbers 404 ("not found") or 403 ("forbidden").
Less commonly spotted is error code 418, which makes your browser proclaim "I'm a teapot."
If it sounds like a joke, it is: Way back...
Tempest in a teapot: How a 15-year-old rallied programmers to save one of the web's oldest jokes (GOOG, GOOGL, MSFT)
Sunday, 13 August 2017 (1 week ago)