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1.
The wyrd power posessed by women that allows them to control a heterosexual man's circulatory system, depriving blood to the brain, and readjusting flow to the lower waist
Her powers of vaginamancy are superior even to your mom's!
by Kevin Petrick February 17, 2004
 
2.
The ability of a woman to control a situation simply by benefit of being female.
In order to get help moving heavy boxes, Lorraine had to exercise some serious vaginamancy
by centricity October 12, 2010