I don’t follow.
A flat line on a polygraph (whose accuracy is a debate for another time) would indicate they are telling the truth, or rather that they believe to be doing so.
I get that you’re claiming their perception of reality is skewed, but deriding people for saying what they genuinely believe to be true is odd.
It's the reason why boomers swear they were present at every major event during their lifetimes, as though we're surrounded by Forrest Gumps.
That sentence appears to argue that you think them passing the polygraph is a bad thing—why make the comment otherwise—which doesn’t make sense to me. It doesn’t affect your larger argument, but it doesn’t support it either and thus stood out. It’s as if you had ended your post with “bananas are radioactive”—true, but I’d be left wondering why you had felt the need to mention it.
If that answer doesn't satisfy you then call it observational humor regarding urban & suburban neuroses. Not really sure what you're driving at otherwise.
A discussion about Sweden and you couldn't help yourself huh.
Some peoples' perception is entirely driven by watching too much local news, and yet they somehow convince themselves they or their friends have personally have experienced all of this. Hook them up to a lie detector and it would draw a perfectly flat line as they spin their tales.