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Bad Kid
A person who is not good at a video game.
(After owning a kid on halo 2) "Wow, you're a BK."
by Fonzii March 14, 2007
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BK stands for Brooklyn, New York
"i like them bois up top from the BK" -Destiny's Child song Soldier
by Awonu August 19, 2005
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Boner Killer
Sometimes mistaken for Burger King. BK is an adjective used to describe a man or women who killed your boner.
Tyler: Dude that chick looks like a zombie, she is such a BK!
by Chilli Pepper Pants March 26, 2009
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Buzz-Kill - Sometimes a thing but most often a person that kills your ecstasy buzz in 1986. Any Debbie Downer during times of inebriation.
It was a real bk when Laura showed up, she's so fucking needy and all the coke was already gone.
by Kdub83 May 22, 2014
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Stands for "Blood Killa". Terms Crips and other opposite gang sets of the bloods use. Also, being written as Graffiti on walls, on the internet, notebooks, cars, hats, clothes, sneakers, etc.

Also, being substituted for the letter "b" in every word by gang members.
Its BK, All Day Everyday!

Fuck dem bklue rag bkitches, i bke bkangin dat shit like a tru g.
by OG Killah Bu5taH April 25, 2005
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