Adj: a black person who acts white and only hangs out with white people.
Tyrone only hangs out with white boys he's such a koon
by Uncle ruckus 124 August 28, 2017
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A black person who is anti-black and acts against black people.
Those black Trump supporters are Koons.
by Xaviauna June 30, 2021
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A kind and nice guy that's addicted to playing Pokemon in class.
Don't be a Koon in class, but be one anywhere else.
by Ian LolZ November 29, 2017
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A person that is incredibly dull and annoys you any way possible. AKA= Mark Wong
Man....that koon koon always follows us around everywhere.
by Jason Lau March 15, 2005
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Flirting with or hitting on your good friend's very serious girlfriend. Named after "Koon" of youtube fame. Kooning is often made possible when the boyfriend is away and the girlfriend shows pity for the kooning boy which is misinterpretted by the desperate despicable kooner as affection. Kooning is not cheating because the girlfriend is very pleased with her current boyfriend which just makes kooning all the more despicable.
"Did you see Alex kooning last night? If Nick knew he would beat the shit out of him!"

"How can you respect anyone who koons as much as he does? Doesn't he realize he doesn't have a chance?"
by Bob321 March 17, 2007
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