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The act of going back in time and killing someone before they can commit some form of atrocity. Ideally used for altering pop culture, not history.
Keanu Reeves needs a time by right after Bill and Ted's Bogus Journey.
by Phil K. November 15, 2005
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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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