A person who throws up after getting wrecked, usually at a party or on a party bus
Rita was upset that her boyfriend broke up with her so she downed a bottle of Bacardi while on a party bus and became the lone yack star, ruining the bus for everyone else
by yaboiwill January 17, 2014
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10 grams! We're gonna be yacked up for awhile.
by Jaclyn R June 8, 2006
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To cackle with a high pitch in the direction of nonsense , without direct meaning of anything.
Them bitches were up for two days kai-yacking .
by Julz London December 14, 2019
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The act of puking and then continuing to party.

When you start to feel sick from drinking, head into the bathroom, throw up, and get back out there
"Are you feeling okay?"

"Never been better. Yack and Rally, baby"
by jzburger9 September 23, 2018
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Someone who is yacking their brains out may be visiting Yack City.
After Tammy-Lynn drank a 40 of Smirnoff, she took a nice little trip down to Yack City.
by zhughes February 14, 2016
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When someone projectile vomits in a semi-circular pattern creating a sprinkler-like effect. Usually only occurs when copious amounts of alcohol are readily available and consumed.
Last night some freshman sprinkler yacked all over my kitchen!
by Witz Kalitzel October 31, 2010
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This is when your girlfriend, wife or someone elses wife deep throats your cock and you hold her head all the way down until she starts gagging and yacking on your wood!Hense this is known as "Yack Wood"
"I can't do it Billy, I'll Yack" she said
Billy replied "All the way down to the balls and give me Yack Wood"
by Bobby da Bone February 24, 2009
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