YACK

Something or someone who is disgusting or nasty.

Throwing up is YACK! or This coffee taste YACK or She is YACK.

by iam2nocnt November 30, 2009

YACK

Puting word together to the point where it has no relevence

1. Yackin it up
2. Damn I'm full of yack
3. Yo kid any yack today?
4. Fucking Nexso and his stupid yak.

by Ez13 December 04, 2006

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 04, 2010

Yacked

to vomit after drinking heavily

i hela yacked all that brandy

by Anonymous March 31, 2003

yack

to throw up, usually after drinking

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

by Vick March 06, 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 25, 2009

yack

verb. Meaning to throw up or vomit.

I am going to yack on your sweater.

by ToplessFlamingo January 22, 2007