Top definition
A rare but powerful female form. Women whom actively seek out to destroy men's confidence through their sexual prowess. A fanny master is the only type of female who could possible damage the ego of a cockmaster. Women who can reverse the sexual tables on men and should be avoided at all costs by innocent males.
"I thought i met a nice girl last night we went back and she basically raped me and then kicked me out. She 'used' me for sex - oh how dirty i feel"
by Dunc March 02, 2005
Happy St. Patties Day!