The only joke I see is the cosmic irony of some pompous, self-appointed gatekeeper bitterly complaining about humour whilst being factually wrong in every particular of their complaint:

1. The 418 response code is not standard. It is described in RFC2324, which is an informational RFC, not a standards-track document. This rookie blunder illustrates how understanding the standards process can be as crucial as understanding the documents themselves.

2. Tea, and teapots, originate in China. Coffee, incidentally, has African and Islamic origins.

3. Doctors are very funny. I should know, I married one.

We take humour seriously here on the Hacker News forum. Do try to keep up