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Direct translation of the Chinese slang for the scrotum.
( From 'Taipan', by James Branch Clavell )

" Ming noticed the tiniest flaw in the waiter's dress as he served James, and quietly told him ' Put your jacket in order when you serve my guests, or I'll slice off your Secret Sack for a change purse!' James was lost in wonder at the delicate beauty of the Mandarin language, which he himself knew little of."
by D F Stuckey April 15, 2004
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