Similar to the terms swamp ass and swamp balls, swamp vagina 《or swampgina》is when the vagina gets overly sweaty and/or crusty 《mostly from lack of hygiene or showering》 and secretes the smell of a nasty ass swamp.
Damn girl! Wash yo ass, you got a nasty case of swamp vagina!

I was standing behind a girl in line and she REEKED of swamp vagina!
by STRIPKNOT May 13, 2016
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