1 definition by Ronnie Danger

n. a fat girl that begs for or steals drinks at bars because no guy will buy them one

Plural: Thirsties
Person 1: I set my beer down to dance. When I turned around to take a swig, this fat bitch was slamming it.

Person 2: That's because she's a thirsty.
by Ronnie Danger April 15, 2010
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