A person who attends a party which they initially had no intention of attending, possibly due to a lack lustre male-female ratio, or simply the disgusting and un-entertaining nature of fellow party attendees.

The Bandit will attend the party, but not out of good will towards the host, but rather, to get highly intoxicated to the stage of obnoxiousness. The aim of the party bandit is to switch the entire focus of the party to their drunken antics, rather than the party host.
Did you see John Party Bandit the shit out of the party tonight, I can't even remember whose party it was.
by The Dawg 89 February 11, 2010
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