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Basically the same as a mangina. An artificial vagina constructed from (typically) the remnants of a male's penis when a surgical gender reassignment is performed.

Frankenstein was built out of salvaged body parts, as is the frankenfanny.
That thing looks like a frankenfanny to me.
by Bobweb June 15, 2005
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Apr 21 Word of the Day
I've been jabbed
by Francesco II March 20, 2021
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