Top definition
Little known cousin of Jack the Ripper, famous for his ability to fart on command.
Today Jack the Ass Ripper killed it at the show.
by Saruman's Army February 06, 2015
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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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