Top Definition
Someone who hits the town every night not for their own enjoyment, but to impress the people who party.
Emily: Have you seen Lizzy? She goes out every night and then complains about being tired in class.

Katie: That's cuz she's a party poser, yo!
#party #poser #pirates #plankton #pretentious
by EveryNightICannes March 05, 2011
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