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1.
When you dip your hand in melted chocolate and insert the chocolate-covered closed fist into your partner's rectum whilst yelling out, "I'm neutral! I'm neutral!"
Dude 1: Dude, my girlfriend rocks, she let me give her the old Swiss Fist last night.

Dude 2: DUDE! Milk chocolate, or dark?
by Deav, Belkins & Associates February 17, 2010