The side of your scrum owned by 1 ball.
She pinched my left balls ack!
by Dennis S March 19, 2011
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The act of acting like an ass, sometimes while under the influence of drugs.
#1 What are you trying to do tonight B?

#2 ..Smoke some trees, and ack a azz
by SDsaskatoon September 9, 2011
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taken from bill the cat from bloom county, meaning whatever you want it to mean.

"it smells like like ick-ack in here."
"that girl's ass is fuckin ick-ack after who she's been with."
by Kineticon November 14, 2004
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The way to tell a friend you are on Nantucket (ACK)
Friend 1: Are you on Nantucket?

Friend 2: Yea get Ack me.
by getpink13 July 25, 2011
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something a terrorist says just before he hits a building head first.
from family guy : Peter griffin"oh my god you missed the time america was attacked by mentally challenged suicide bombers"." allah ack bar" SPLAT!
by dxjames123 May 20, 2010
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To throw up so hard you sound like you are saying "booo aaack"
Le Brum boo-acked so early this morning after last nights party.

Don't boo-ack on my shoe please.

by Henway April 18, 2006
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an american man with no brains whatsoever. The race of the man is undefined, he is considered not black nor white and a little asian.
by Chubblebee212 August 13, 2012
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