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The pair of lips found on the exterior of the vagina, the labia. Likely, a derogatory term referring to a woman's entire vagina.
Come here you dirty little tart and let me plumb the depths of your piss curtains with my meat thermometer.

When was the last time you washed your piss curtains? You smell like a fish market on the hottest day in summer.
by DarthVenom1980 August 28, 2010
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