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Fingering technique where the male curls his index and middle fingers like he's gripping the trigger of an M1 carbine and applies steady, rhythmic pressure just inside the vagina. This activates the Orgasmic Crescent: the urethra, G-spot, clitoris, and clitoral network.
Jill: He performed a sex move on me with his hand that no man has ever come close to competing with.

Jacky: That must have been the Nippon Knucker, I love Asian men.
by YodellingYack November 02, 2011
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