Attention: I’m not a teacher.
Hi jtgf,
I found the following meaning of the verb in question:
wag (v) = to move (a body part) rapidly from side to side or up and down, as in playfulness,
agreement,
admonition, or
chatter.
There is a brief excerpt of a funny story:
….I decided not to cause an accident and continued accelerating. to which the woman, pissed that i didn’t let her get over, started screaming and
shaking her head in the “oh no she di’int” kind of way.
I told to her: “
Don’t wag your head at me”
There are two verses of two different versions of the Bible:
Webster's Bible Translation
To make their land desolate, and a perpetual hissing; every one that passeth by it shall be astonished, and
wag his head.
Jewish Publication Society Tanakh
To make their land an astonishment, and a perpetual hissing; every one that passeth thereby shall be astonished, and
shake his head.
Regards.
V.