A woman or man, often underage, that goes to many parties (parties usually include alcohol, marijuana, ecstasy, cocaine, or any other controlled substance. The lower the knowledge of the substance being used, the larger of a party bitch the party bitch is). Often times, the amount and/or frequency of parties attended reflects upon the party bitch's personality.
Symptoms of being a party bitch may include: laziness, apathy/ lethargy towards work, friendships of only party bitches or those who supply substances, tanning, overinflated sense of self worth, listening to techno/ crappy rap, being tired often, wearing sparse clothing, wearing ample makeup, smelling like too much perfume/ cologne, being unintelligent, being uncreative, loss of interest in activities that do not include partying, being fairly worthless to society in general.
The Party Bitch vomited on me after a long night of drinking.