A vagina so distorted from a good fucking that it no longer satisfies Euclid's parallel postulate, instead existing in more exotic geometric spaces, including but not limited to hyperbolic and Minkowskian geometries.
"Yeah bro, I wrecked that pussy so hard that for a given line L and a point A not on L, there was not exactly one line through A which did not intersect L."

"Nice dude, non-euclidean vaginas are clutch as hell."
by Erotic Cryptography October 18, 2011
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