That third word, starting with 'n' is British slang, which you are welcome to look up.

Presumably the etymology was in place before it took on its present meaning, but it is not a word I would use in a professional context.

My comment was oblique, but not sarcastic. Partly because I didn't want to use the word directly, and partly in keeping with the tone of the original blog post!

The British usage predates the RFC and probably the cryptographic use. I definitely heard the term in the late 80s.