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https://youtu.be/P2FGMg88YsU

Watched this yesterday and where I don't want to fall into the the sky is falling mindset it sounds as though the sky is falling.

As for the woman herself ...
I don't want to watch hours of David Knight to find it my husband said (he can't remember the episode, but said he heard it on DK) that people that make that sibilant sound are summoning demons?

I've been looking I'm seeing a whole bunch of things about whistling and demons and the like but nothing on that topic in specific.

Does anyone know about this?