good lord, in those phrases he was quoting the wording in the comment he was replying to.
I don't know if you are young or old, but I'd like to teach you about threading (and we won't stop till you get it or your eyebrows are gone)
The person kvetching at you about not understanding threading is making a joke because there's also a process called "eyebrow threading."
HN is supposed to be high quality discourse and you have to be on your toes if you want to participate!
Missing context, and missing references, and doubling down when you're called out is NOT the optimal strategy.
I am so sorry not to be at the correct level and, as a non English speaker, not to know all the references.
I feel so ashamed, fortunately you enlightened me about the high quality discourse I was missing.
Thank you very much for your kindness.