Top Definition
to fuck; to have sex
I walked up to this girl and I said "Let's Kack!" and she was like "Aiight take me home baby"
by UrbanLyfe May 03, 2009

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Underpants, shorts.
Bob was minging, he had not changed his kacks in weeks.
by TrevorM December 05, 2008

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kack means :-
1) from latin which refers to wiping your arse

2) means shit , ballshit , arse wipe

3) crap

4)tosser/ wanker
1) s/he talks kack
2) s/he's a bit of kack
by hycksos June 07, 2009

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1.Moose dick, used in some ones mouth. usually some one who is not aware of how much moose kack they suck.
2.To fuck up in a major way.
1.You suck big moose kack.
2.You totally Kacked that shot.
by ja ca December 23, 2007

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When your dog chokes and it literally sounds like the word "Kack".
Dog: "KACK! "

Owner: " Honey I found my other sock."
by Struckbinkey649 July 19, 2017

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A word you say out loud to annoy people in a shopping mall, strip mall or YMCA location.
Kack!! You annoyed? Well KACK!!!
by KinkoX120 September 24, 2015

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Australian Slang. To describe how someone laughed at something.
"He absolutely Kacked himself when Darc fell down those stairs".
"What a Kack!"
by Eamon Hale August 09, 2004

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