I do not like this trick because I feel that there are a couple of issues with this trick. Firstly,
when you let the bill flick on its on, it does not really flick. Instead, there is no flicking
movement of the bill and only a sound is created. Which leads me to my second problem.
Since there is a sound created and there is no movement of the bill, spectators may guess that
the magician is making the flicking sound through his mouth. I will not recommend this trick at all.