軽く（優しく）一度だけなにかをたたいた時の音。
The sound of lightly (gently) tapping something once.
マジシャンが持っていたなにかが変化したときにも使われる。（このとき、マジックでは煙が出ないのに、漫符の煙の記号が使われることがよくある）
It is also used when something in the magician's possession has changed. (In this case, the comic smoke symbol is often used even though there is no smoke in the magic trick.)
