What is Yack?
1.
to throw up, usually after drinking
I drank too much tonight, I just yacked behind his shed
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2.
Abbreviation of Cognac - i.e. expensive Brandy. Alcoholic beverage
me and my brothers sipping yack
3.
cocaine, blow, powder, snow, gack
let's get yacked out tonight man.
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4.
verb. Meaning to throw up or vomit.
I am going to yack on your sweater.
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5.
in referance the Lil Jon & The East Side Boyz song "Da Blow" where the hook states "the blow, the pills, the yack, the herb". The term "yack" is actually referring to cognac (pronounced: "cone-yack"). So in essence the song is referring to the blow (cocaine), the pills (ecstacy and/or pharmacutical), the yack (cognac), the herb (marijuana). Which covers all the most common methods of getting fucked up.
In less urban environments, the term is more commonly used to describe the act of vomiting.
noun: yack means congac
verb: yack means to vomit
Da blow, da pills, da yack, da herb... (repeat)
or
I drank too much, I think I'm gonna yack.
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6.
To slam dunk a basketball
Examples:
"Damn, He just yacked it on that little white boy."
"If I was taller I would be able to yack it on a 10 foot hoop."
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7.
To puck or vomit a bad dinner or drink.
I think I'm going to yack up those bad clams we just ate.
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