The act of straightening out one's hand in a blade form and inserting it, up to the wrist, into a woman's vagina. There are several variations that follow. If the woman in question can accomodate this, it is sometimes common to turn one's hand to cup the upper wall of her vagina. In another variation, one is also free to wiggle one's fingers. If done properly, this will result in an instant, howling orgasm.

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