Conquering a different woman for five consecutive nights.
Ok, so like....last week I totally banged a different girl for five days in a row. Yeah, totally a vaginasty.
by Roback Terner January 13, 2008
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Engaging in copulation with three generations of women of the same immediate family (i.e. grandmother, mother, and daughter)
Dude, did you hear? Johnny just completed the vaginasty. He boned Lauren's grandmother!
by Mr. PC29 June 8, 2014
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A tri-force or "family" of vaginas that you can't control. A bunch of girls that are PMSing or just bitchy in general are a "Vaginasty" vagina+dynasty
vaginanastyPMSvaginasty
by Squidsquirell November 22, 2013
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