Rubber Plays

You just need a rubber band and put on your forefinger and middle finger.
Then carefully slip the other end of the rubber band into 4 of your fingers( not include thumb.) From the spectator's view, they'll thought you are just doing some adjustment. They will see the rubber band still holds on to your forefinger & middle finger while you grip your hand close.
Alas, open your hand and the rubber band immediately change position to your 3rd & 4th finger!

I can 't flick it in all four fingers!

I can't flick it all in four fingers

First, pull the other end of the rubber band towards yourself and then grip your hand close. While you were doing this, slip the pulled end of the rubber band into 4 of your fingers, but don't let anyone see this. then open your hand quick and the rubber band will, as well, looks like it jumped into your 3rd and 4th finger.

oh...............ok.....