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The vagina of a woman that emits a foul tuna-like odor due to lack of cleansing
Holy crap, Julie's got tunapuss!!!!!
by hard rod March 24, 2007
One who's vagina is so disgusting it smells like a dead fish. Often associated with skank cheese.
I went down on her last night and came right back up...killer tuna puss.
by Nathan Hulsey October 16, 2006