1 definition by Banzai Boy
A dive in which you jump into a pool , fold in your body with your hands & feet close to each other with the finger tips and toes pointing down, then unfolding bringing your feet to the air and keeping your hands where they are.
person 1 on diving board "HEY GUYS! CHECK OUT THIS JACK KNIFE IM GONNA DO IN THIS POOL!!"
person 2 from a far "YEAH DO IT!"
person 2 from a far "YEAH DO IT!"
by Banzai Boy November 23, 2018