Eastern Grip
Masturbating with your off hand but flipping it so your thumb points at you like you're showing your ass to a foreigner who just arrived by ship.
My hand was upside down and I was confused why my brain wasn't working.
I tried the eastern grip and my mom walked in. She asked if I was trying to summon a demon.
I told my friend I was doing the eastern grip, and he said I was just being a weirdo.