An Incestuos lesbian. Two sisters that have sex.
Twins that have sex with eachother in a porn are incestbians.
ayon kay Amanda Ferguson ika-24 ng Setyembre, 2007
Two related females participating in sexual acts together.
Isn't that her sister? Yes, they are incestbians.
ayon kay Merideth Factsterburny ika-25 ng Oktubre, 2010