The finger whistle may seem difficult, but with a little practice, anyone can master it.
To complete this How-To you will need:
Clean fingers
A mouth
A mirror
Step 1: Position fingers
Form a U shape with your thumb and forefinger or middle finger.
Tip: Use a mirror to perfect your form and technique.
Step 2: Place in mouth
Place your fingers partly inside your mouth, wrapping your lips tightly across your teeth. Only the outer edges of your lips should be visible.