1 definition by Dr. Walter W.D. Merriweather

Top Definition
1. The waxy coating, thin skin or membrane found in between the scrotum and anus: he checked the consistency and odor of his fumunda before exiting the bathroom.
The slang term is a shortening of the phrase "from under", more specifically "from under my balls".
by Dr. Walter W.D. Merriweather March 18, 2003

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