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One who is quick to do things. Most of the time referring to sexual activity where the man leaves the women quickly after sex and never speaks to her again.
Did you hear what Jonny did to Linda?! Man he's such a smasher dasher!
by Mini Bulker April 27, 2011
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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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