The question is: To what extent does hearing someone say that they are "feeling no pain" automatically invoke an association that what they mean is that they are "stoned?"
To me, it would be a great extent considering the times I lived in as a young man when I would hear the phrase now and again.
While I'm largely clueless about its connotations today among post baby boomers, a quick AI search tells me it's gained a wider scope. More escape from stresses in general rather than being "stoned". It's a reason that Stoicism has gained such wide interest among the post boomers.
Although stoned works! 🥴