Yack Yack

If you throw up Jack Daniels in a Spanish speaking country. In English you would Yack Jack, however Spanish people pronounce words starting with J as Y, hens Yack Yack.

(Dude throwing up Jack Daniels in Cancun when a local is around and sees)

Dudes Friend: Where did my buddy go?

Mexican Local: Oh, he Yack Yack Senior.

by Grieb Minzadian April 09, 2010

Yacked

to vomit after drinking heavily

i hela yacked all that brandy

by Anonymous March 30, 2003

yack

to throw up, usually after drinking

I drank too much tonight, I just yacked behind his shed

by Vick May 13, 2005

yack

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.

by hunnygrl420 July 26, 2009

yack

verb. Meaning to throw up or vomit.

I am going to yack on your sweater.

by ToplessFlamingo January 25, 2007

yack

Abbreviation of Cognac - i.e. expensive Brandy. Alcoholic beverage

me and my brothers sipping yack

by Mutspelski February 15, 2005

yacking

to throw up due to intoxication.

last night krumples spent the night by the toliet. that's why we call her Mrs. Yack-Yack

by amanda September 07, 2003