dumb, idiot, stupid, retarded, a jackass, and/or a close homey.
If someone is acting like the definition, you then say "your black"!
by 1face June 08, 2003
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A saying that is said everyday usually in a non-racial (most of the time) way, this quote is used just to mess around with your black friend, but may still get mad because you said it, however this is a very popular catchy phrase that should get said at the right unexpected moment, and is usually always funny if used at the right time and not exaggerated.
Leondre: Yo Izzy.. I didn't get the job at pizza hut..

Izzy: It's cuz your black.
by izzy863 February 22, 2010
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Having sex with a black guy/girl for the first time when you are not black.
hey dan, i heard you "getting your black belt" last night... latoya is a screamer.
by sbman January 12, 2011
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An event kind of like a blue moon, something that doesn't happen very often.

An offer that you can't let go cuz it won't be as good of an offer the next time, if it's even there.
A really hot male or female who is way out of your league that you've admired all your life is a little bit tipsy at a party. And suddenly they find you attractive.

Dude, Sheila is all over me.

You better take advantage of that, this is your Black Friday come early.
by Beechu November 23, 2010
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Basically saying that once a woman dates and has sex to a black man, the size of his penis will make her never go back to white men.
Girl 1: I love my black boyfriend, we are gonna have sex.

Girl 2: But "once you go black, your never going back!"
by secret12345678910 March 02, 2011
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