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1.
Usually a wild chick who forthrightfully declares she gets off on doing it in public areas--and proceeds to "exibit" such.
A freshman student at the University of Chicago was taking a noon walk along the lakefront when she encountered, along the lake rocks, an exhibitionist serving one of the locals.
by Carlos Mack December 10, 2007
 
2.
Male or female who shows off their cunts or cocks for a thrill.
Golly, why don't I walk past those two cute girls and flip out my impressive half-hard prick-n-sack. I will get quite the thrill, then I can go jack it off.
by flashboy July 19, 2003
 
3.
A person who takes great pleasure in having an audience to watch them pleasure themselves sexually. Exhibitionists are selfish people.
Chris Ward, Plano teacher who has women over to watch him jack off, thus making him an exhibitionist. He gets a thrill from having even one person watch. Another example includes porn stars.
by AliH85 November 29, 2010