A singer who suddenly loses his or her ability to sing during a live show
The Dirty Deeds lead singer had a kack out last night!
by tripleP December 1, 2007
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or kack festival: to have fun sex for hours and hours, sometimes lasting all night.
I went to a girls house and we had a kack fest!!
by Jason Berti December 1, 2007
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a strange bag one might carry just for the excuse to carry a strange bag. The bag is most likely both uncomfortable to carry but also nearly impossible to use as a bag (cannot hold useful items). And holy shit what is this? The FaceBook feed seems to be updating talking about Porn! and terrorists? What is this crud crumpet? I shall not accept this random posting of strange words by freshmen (for who else actually visits this page).

Do you under stand the stupid bag word? I just wrote this so I could say Kack Sack in real life, and cry in front of my three friends, so fuck life, fuck me (please don't), and fuck tennis.
I but some bull shit in my Uber Fashionable Kack Sack just so I could justify carrying this stupid bag.
by Feleckitet May 27, 2014
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someone who enjoys fondling their privates (preferably under tables) without the removing of ones trousers
"Here G man stevie D is having another jack in his kacks"
by Ramboisawab May 5, 2005
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a shreek at da top of ya voice. more commonly emitted when pissed but can still be heard when not.
if excited yell KACK-KAAAR!
by macca December 27, 2005
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to be de-pledged from a fraternity or sorority
He was kacked because he sucked as a pledge
by P-diddy April 4, 2004
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(kack) bar aka soap common cheap low grade cannabis resin common in uk .Frequently found to contain pieces of plastic .
Couldn`t get anything decent so I got kack bar with bits of plastic in it
by discohippie September 9, 2007
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