Incest. 

Having sex with a blood relative. Usually a result of living in a remote location with a population of 1-4200

The man had incest. In order to keep on the family

Incest. by Thotsavage68 November 6, 2018

incest porn 

Porn, only with incest, like mother and daughter, or father and daughter, or even father and son and mother and son. This shit is crazy.

1: "Damn, I jerked my sausage roll over some lover shit last night"
2: "What kind?"
1: "That Incest shit"
2: "Gotta love that incest porn"

incest porn by Joelfuckedhisnan-dos December 20, 2016

incest is wincest 

A phrase many anime fans use to describe/praise an anime/manga depicting incestuous relationship(s), usually between or among siblings.

"I just can't stand anime, man. Why is there so much incest in it?

"Bro, incest is wincest!"

incest is wincest by Yume99 August 11, 2016

Incest Math 

The branch of computational logic that deals with explaining the complex nomenclature of complicated interfamily relations

Incest math problem #1: Your son is your brother. Who did you fuck?

Incest math problem #2: You had sex with your aunt who is also your grandmother. What would your daughter be?

Incest math problem #3: There is an orgy at the Smiths house. Jacky and Jamie are twins. Jacky doing Jimmy who is their dad and uncle and and Jamie is doing John, her little brother and grandson. Jordana is doing her cousin who is her grandson and her 2nd uncle. She is also Jacky's mom. Justin is the great grandfather and the brother of John, and he knocks up Jamie who is his cousin. Jester the dog is doing the couch pillow. Explain the whole thing.

Incest Math by erothumos November 23, 2015

Incest Monkeys 

Two or more people who are closely related, that have a large amount of sex all the time.

Guy 1: "Did you hear about Jim and Kate?"
Guy 2: "Yeah bro, they totally had sex."
Guy 1: "Incest Monkeys."

Incest Monkeys by R.J. Harris September 2, 2011

Incest swingers party 

Its what you think it is, a fucking swinger party with realtives involed. Or some would say a Family reunion in West Virginia.

When You go to a Incest Swingers party theres always time for a little family bondage, My aunt used to squeeze my cheeks when I was little now when I go to the Annual Incest Swingers Party I cum in hers.

Incest swingers party by Uncle Delmas January 9, 2010

incest princess 

girl who thinks she is princess of her small town because she sleeps with family members because of therefore lack of other male partners

cristale slept with her cousin last night with pride and joy knowing no other women were available or convenient therefore making her the incest princess of her small town

incest princess by donthedondon June 26, 2007