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The ratio that determines the distance between a man and a woman standing on an escalator, that it takes for the man to see the woman's underwear and it's depended on the skirts length.
I was walking behind a girl wearing a mini skirt the other day and when we got to the mall escalators I slowed down my pace to get the best upskirt distance.
by TheSkyEtc October 22, 2009
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