Top Definition
A girl who's vagina smell like a New York city trash dump
Rodney, don't take her out I heard she has a case of the ratass
by Frank Grimes April 13, 2005
1 more definition
An ass that is particulary pointy, rather than rounded like a normal ass.
Hey ho, how 'bout you lose that rat-ass and get some real junk in the trunk!
by Aaron N.W. January 13, 2007

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