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Originating as a joke featured in the TV series, Broad City, and referencing multiple scenes from the film, Black Swan, to Black-Swan someone is to stealthily approach an unsuspecting victim, esp. an acquaintance, from behind, wait silently from a short distance for the target to turn around, and to opportunistically startle them by standing motionless and displaying a batshit-intense, emotionless, I-watch-you-while-you-sleep, and unblinking stare.
I was minding my own business, finishing up at work, looking for a document I needed to work on at home that weekend, when my BFFL, suddenly at my place of business and looking deeply into my eyes, Black-Swanned me so badly I screamed and possibly farted.
by 1<l10mmm November 01, 2016
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To be engaged in sexual contact with your partner, from behind, in a swimming pool, then forcing their head underwater which each thrust. (this mimics the actual mating habits of swans)
I got so carried away when I was hitting that in the hotel swimming pool last night, I started to blackswan her.
by giraffe-o July 07, 2011
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An event or occurrence that deviates beyond what is normally expected of a situation and that would be extremely difficult to predict.
Reeses' Peanut Butter Cups were formed by a Black Swan event when a truck carrying peanut butter ran into a truck carrying chocolate.
by kleinsound April 10, 2008
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Verb. To dramatically wipe ones face off after performing cunnilingus, as seen in the movie "Black Swan" during the sex scene between Mila Kunis and Natalie Portman.
That guy from last night? He totally black swanned me.
by AvidFan1138 January 05, 2011
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(v)-To self-sabotage oneself when faced with high-stake, high-stress situations.
I black swanned myself before the exam on Tuesday by going out and getting drunk with all of my friends.
by WNKT February 19, 2011
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Originated from the original motion picture Black Swan

(adj.) to look at someone in a suspiciously, sexually curious manner; paranoid.

(v.) to black swan one's self is to masturbate with your mother in the room; to fanatically fantasize sexually and paranoia based about someone of the same sex; to cup a women's vagina.

n.) someone or something that is paranoid, evil, dark, weird, mental disorder, and/or erotic; a woman who has lesbian tendencies; one who looks like they'll stab you or themselves with a mirror shard and put your remains in the bathroom
(adj.) "You look really black swan right now, could you please stop looking at me like that?"

(v.) "He totally black swanned my vag last night."

(n.) "Did you see that picture of Kristen Stewart? She totally looks like a black swan."
by PussyCatSaysMeow January 19, 2011
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