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A Covert Courtesan is an escort who is extremely Under The Radar (UTR), so much so she may actually be a "Unicorn." Though hidden from public, the Covert Courtesan is the best lay in the city.
John: Who is that?

Me: THAT is, Cain . . . Candi Cain, the Covert Courtesan! She is so hot and great in the sack they created a new phrase for her. "The Covert Courtesan Experience." She is shagadelic!
by satireV August 11, 2011
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