The following description exists for REFERENCE. It is NOT intended as INSTRUCTIONAL

How It Is Done

The Attacker gets the Defender's head between their thighs while placing the Attacker's own ankle behind the Attacker's opposite knee. The Attacker then closes/traps their ankle behind that knee, creating a "number four" with their legs around the Defender's head.

How To Escape

The Defender's limbs are all free to try and effect an escape.