*Full Form:

• Make a fist with the nondominant hand
• Point the index finger of the dominant hand
• Tap the fingertip on the wrist of the nondominant hand
• Repeat tapping movement

Simplified Form:

• Make a fist with the nondominant hand
• Point the index finger of the dominant hand
• Touch the fingertip to the wrist of the nondominant hand

*shown in video