Watch the following video @ Super Brain Yoga
We used to practice it on several occasions in Hindu practice (like Ganapati darshan), teachers used to punish us like that when we were kid. The very same technique registered with the name of Super Brain Yoga.
Superbrain Yoga® is a simple and effective technique to energize and recharge the brain. It is based on the principles of subtle energy and ear acupuncture. This powerful technique is explained in Master Choa Kok Sui’s latest book Superbrain Yoga®. Find out more at http://www.superbrainyoga.org/