Girls, is a woman dangling her shoes a sign?

Anonymous
I was watching this video on "body language signs that a girl finds you attractive" and it said one of the signs is that a woman is dangling her shoes when interacting with you.

This reminded me... about a year ago, I used to go to this physical therapy / massage and I noticed her dangling her shoe many occasions when giving me a uppper back massage (i could see her feet through the hole for the head that you lay on).

Thoughts? BS? or some truth to it?
It is generally a sign
I don't know
Not a sign at all
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Girls, is a woman dangling her shoes a sign?
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