Description: This is a trick to snap your knuckle where people cannot see it but it looks like your really cracking your knuckle.
Place your middle finger of your right hand between your index finger and middle finger of your left hand.
Place your index finger and middle finger of your left hand over the knuckles of your right hand.
Place your chin into the small concave crevice formed from your fingers.
Snap your middle finger of your right hand into your palm.
Results: The resulting suction will create a loud snap!