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A Tweetover is like a sleepover, except instead of chilling with a buddy you tweet all night.

ZOMG I can't sleep! Time for a tweetover!
by niffler March 23, 2009
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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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