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 3, 2007
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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 November 29, 2015
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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 6, 2014
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The most disgusting, low life, waist of a person and the worst abomination in the entire world.

A baby who was conceived while a women sucked off her brother whilst he took a poop then proceeded to let him finish inside her.
by Imadeupfoompa April 30, 2019
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