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The act of saying "fuck you" to responsibility and obligation, and just going off to do your own thing.
I told Daniel to stay home while the neighbors where in our house, but he'd rather just ass off and go to the bar.
by BigLJ March 27, 2007
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Jul 29 Word of the Day
Someone who used to be a potential girlfriend/boyfriend, but no longer is.
Tim: Zack, is that your exgirlfriend?
Zack: No, she's an expotential. We never actually dated...
by brownsuite September 24, 2011
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N. A battle of butts to see whose ass is the greatest.
N. A pageant of sorts that focuses on the ass primarily.
Evan: Yo JJ, you and Donnie should definitely have an ass-off.
by Big Saxy July 26, 2017
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