Someone who is Extremely arrogant, and has a big ego.
"Wow John You are a big SACK ASS" said Jake

"You are such a SACK ASS John" said Ian
by MISFITxPLAGUEx August 19, 2009
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When you first squeeze the ass there is some give, giving the squeezor the illusion of a "Fat-ass." However, upon further squeezing, the squeezor realizes that said ass is rather lean at its core, hence the name hackey sack-ass, due to its resemblance to a hackey sack.
Girl 1: "Ya I thought his ass was fat but upon further squeezing I found it to be rather firm."
Girl 2: "Like a hackey sack?
Girl 1: "Ya Totally, it's a hackey sack-ass!!"
by Li the Pious November 27, 2009
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"Man did you see that guy lose in Mario Party 3?"
"Yeah, what a Ball Sack Ass Nigga."
by Saiminjutsu May 25, 2019
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"Did you see him losing Mario Party 3?"
"Yeah, what a Ball Sack Ass Nigga"
by Saiminjutsu May 25, 2019
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Similar to a ball sack just hanging from your ass. May come from surgery or minor misfunction while growing in your moms vagina. Very droopy and hairy. Hurts when kicked. Very pleasurable while licked.
"Don't kick my sack of ass again or we will have problems!"
by Syd.the.kid December 28, 2016
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A sack-baggy of drugs stuck up ones ass for conveyance (ex. into a penal facility, through airport or seaport security.)Also done to prevent discovery by police.
WORK RELEASE INMATE 1: "why you so boogered up homie?"

WORK RELEASE INMATE 2: "cause i had this ass sack of blow nigga"
by JIMMY WAYNE May 6, 2008
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