The Female Version of the Uncle Tom, which is basically a person that dislikes/disowns their own race and/or pretends to be of another race.
Usually this the term is used in the black community but this can be used for any one that supplicates to a race or races of people while at the same time hating their own
I won't date an Aunt Tammy, she should be proud her race.
Linda is such an Aunt Tammy, all she talks about is how bad the black community is. She's black.
All girls who say they are "Mixed", Spanish, Puerto Rican or etc, when they are really black are Aunt Tammies.
If you're married to an Uncle Tom of the same race, you're an Aunt Tammy... But that would be impossible.