Finger snapping behavior is common we see many people do it…
A sound will appear when doing so…
What is the sound that comes from the thumb rubbing with the middle finger?
It didn't come from there, the crisp clicking sound that we heard came from the middle finger that stomped into the palm of our hand, precisely the part of the palm that was under our thumb.
This happens because when we snap our fingers, this action pushes the fingers we use to snap our fingers creating tension.
Well, as a result, when we forcibly release the finger, the finger will hit the bottom of the thumb at high speed and produce the sound earlier.
Try to prove it...