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An Incestuos lesbian. Two sisters that have sex.
Twins that have sex with eachother in a porn are incestbians.
by Amanda Ferguson September 24, 2007
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2
Two related females participating in sexual acts together.
Isn't that her sister? Yes, they are incestbians.
by Merideth Factsterburny October 25, 2010
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3
Noun,

1) 2 or more women in an incestuous relationship.

2) A lesbian who is attracted to members of her own family.
That girl hangs out with her sister too much, I swear, she's such an Incestbian!
by Gloria Fanderbuilt October 27, 2010
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