Used as a synonym to denote something "nasty" / something ridiculously nice.
Taken from Kanye West feat. Pusha T & Ghostface - New God Flow:

I came aboard for more than just to rhyme with him
Think ’99, when Puff woulda had Shyne with him
YUCK
Matching Daytonas, rose gold on us
Goin' H·A·M in Ibiza done took a toll on us
by RBK79 November 29, 2012
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An accomplice or partner who aids in getting an older person (50+) to partake in narcotics.
Yo, that yuck right there is trying to get my grandma to smoke some weed.
by Charles Golay August 28, 2017
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Derogatory term for a white person; or proper term for a racist white person.

Normally I don't fight fire with fire but I found this one to cut reasonably deep.
Boy what be's you think you's doing up in this here seat?
--Can it Yuck.
by Ten Point Plan March 15, 2006
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A term for someone who is unpopular and UGLY. Someone or a group of people who you wouldnt want to assosiate yourself with. Usually are greasy nasty creepy .
"Ew, Look at the yucks over there"
"Dont talk to him! Hes a yuck!"
by Teapotlid May 29, 2009
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to throw somthing really hard
dude he yucked that ball so far
by Cootsy75 September 19, 2020
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When you're so high you put frozen chicken in your cabinet when you're done using it. Similar words smush, smush parker, and cheeched.
Pronounced like "yooked"
Tommy: I'm so high.
Gavin: You're yucked!
by Yucky Thomas September 11, 2017
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blow, yayo, cocaine. Also Yuckmouth (a side effect of doin some blow)
Me and Jamal were bored so we went and picked up a gram of that yuck
by scott December 6, 2003
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