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First discovered as an "ancient" Chinese massage technique, it has now adopted into a childhood assault tactic.
It is started by sticking a single index finger into another's anus. This is followed by a loud cheer of "Sippie Sou Wow!" from the giver.
Dude don't go to that massage parlor, I asked that cute Asian chick for a happy ending and she stuck her finger in my ass.

Girl 1: "Sippie Sou Wow!"
Guy 2: "Gah! Grace wtf!"
by Cockie August 24, 2007
Happy St. Patties Day!