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8.
A message on twitter.
Originaly founded In 2009 by tweep.net a twitter marketing site who when asked said there was only 4 instances of the word tweep on google and now there are millions.
If you send a message on twitter you tweep. a message on twitter is considered a Tweep.
by MarketingManiac October 16, 2009
 
9.
a cross between a twerp and a creep
"that guy is such a tweep >:/"
by blahberz July 10, 2008