A Flick Knot
Hold the handkerchief stretched between your two hands in the manner shown in [Fig. 6]—that is, inside the first and second, and outside the third and fourth fingers of each hand.
Fig. 6.—A flick knot.
Give the left hand a half turn, as in [Fig. 7], thus enabling the first and second fingers of the right hand to grip the end A, whilst at the same moment the thumb and third finger of your left hand catch hold of the end B.
Fig. 7.—Second stage of the flick knot.
Slip free the fingers of the left hand, excepting those holding the handkerchief, and you will find a loosely made knot. A smart flick of the right hand will now complete the trick, and if you have done all this very rapidly none of the movements will have been noticed by the audience.