How to "Box an Ear"
Cup your hands and in a wide, fast, circular motion, slam them both against your opponent's ears as hard as you can.
Strike with the palms of your hands not your fingers.
The Eff e ct
Boxing the ears is an underused technique that can produce a violent sound wave that has the potential to blow out your attacker's eardrums.
It can also cause extreme vertigo for your attacker, giving you valuable time to get away.