This was a GREAT play on words. I found myself “thinking” half way through, then I said, “Oooh.” (Just goes showing my age a little. Not an adjective I use everyday. ;) )
lol, I thought the strange woman was going to be the subject, but no, you changed it to teens, which fits really well in explaining the sign, but not the woman. I like her exasperation, though.
My dad used to tell me that the “watch for falling rock” signs were in memoriam of a young Indian boy who lost his way somewhere near the Grand Canyon. He was out for a walk one day and he just walked too far and when no one could find him, they put up signs so that everyone would know to “watch for Falling Rock”