Top Definition
a female who participates in a sexual relationship with another female relative (sister, cousin).
no one in the family quite knew how to talk about the sisters incesbian relationship.
by robin lillian July 16, 2006

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Incest/Lesbianism. The term is generally used jokingly.
Girl to sister: Aw, I love you! *Pecks sister's lips*

Sister to girl: I love you, too!

Bystander: Fucking incesbians...
by Carla Toolie August 26, 2010

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A lesbian who only licks her sister's twat.
That big dike is an incesbian.
by cm69 February 24, 2011

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt