A man in a role-playing game (MMORPGs like Everquest specifically) who assumes the persona of a woman, often for the percieved advantages associated with flirting for loot.
Many times players will find themselves in compromising pseudo-romantic situations with another player only to find out later that this character is a mangina (sic.)
There is a great deal of debate on what exactly to call a woman playing a man. Wopenis? Femdick? Girlballer? or are they just another form of Mangina.
This term is definitely in wide use in Everquest Lingo