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1.
In specific reference to a subject, person, and/or place from a previous conversation in time.
After talking about a store in the mall, John tells Kim, "let's go to the one-one."

When referencing a girl that share mutual friends, Kim tells John, "the one-one was looking good tonight."

In correspondence to beer brands as they drive to the liquor store, John tells Kim, I should pick up the one-one.
by JC Robot November 29, 2010