Thanks for the many laughs in this thread!
I am just a humble SLF, and this is not so much a "stupid comment" as a classic "lost in translation", but still funny:
In a Tunisair from Tunis to Vienna, flying over a lighted city at night about 20 minutes before landing.
Me: "Is this Graz?" (Graz = Austria's 2nd largest city)
CC: "No, not grass, it's a city."
(I didn't try again, as she seemed rather busy.)