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Having already lathered up your manhood with shampoo, this is the act of making a fold in a shower curtain, instantly creating a soapy,substitute,pussy before your very eyes and then proceding to pleasure yourself until you blow your load.
Ty, a desperate traveling salesman, proceded to tell his buddies about his Shower Curtain Tug while at a local sports bar. Aqward silence follwed.

Dean, unsatisfied with his usual morning crank yank, headed to the shower for a shower curtain tug.
by Hotdizzle August 14, 2008
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