I find it difficult to believe that any passenger wouldn't be aware that stupid coments to security now get a more extensive response than a stony faced "That's not a funny comment, Sir."
What irritates me is getting the same stupid comments and jokes from the security staff doing checks. My last trip to USA staff at ORD cracked jokes about looking for bombs in my shoes after I was selected for extra screening.
<rant>
Oh, yeah. Extra screening at every stop! "Hey, you're foreign and you've checked in early - get over here!"
</rant>