Definition 1. To be seduced, or to successfully engage in sexual relations with two women, one having blond hair in color and the other having black hair, at the same time.
Definition 2. To successfully seduce, or be roped into sexual relations with a man being a blond girl with your black haired friend or visa versa at the same time.

Prerequisite: Threesome
Example 1. "Those two chicks Black Swan'd me last night."

Example 2. "Hey Tiffany lets go Black Swan that guy."
by Janitor Pianist January 24, 2011
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