Top definition
A person or thing that is extremely slow. Derived from the word pokey meaing slow.

That person was a complete poke ass responding to my question.

I dont want to ride on the fast track only on the poke ass track.
by JasonU38 May 18, 2006
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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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