Top definition
1. The result of two family members, typically a brother and his hot cousin, getting together and doing the DO.
2. Neko's boyfriend.
3. The term used for the offspring of 2 dumbfucks that are closely related that are ugly as hell.
"Neko's boyfriend is an incest baby lacking an off button."
"We're gonna have an incest baby."
"Mama, I'll stay home and take care of our incest baby, I promise!"
by Heenz September 02, 2007
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Donkey Punch Plush

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2
A baby born from an incest relationship.
I and Aunt Jane had an Incest Baby after having unprotected sex for months. We are thinking of getting married.
by TurtleSnake69 March 03, 2016
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Dirty Sanchez Plush

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3
An npc or person's character in a game that is very overpowered and popular amongst other overpowered characters. Practically spoiled in every way possible.

This term is inspired by game of thrones.
Person 1 - hey, did you see that guy, jerry on the game?
Person 2 - yeah he was such an incest baby.
by FancyNarwhals August 06, 2014
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Donkey Punch Plush

10" high plush doll.

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