inbreeder 

A person who has sex with their own relatives or family members. The term usually refers to one who has sex with their siblings.

Why are you looking at your sisters butt? Are you an inbreeder or something?

inbreeder by tory borty September 2, 2013

inbreeding 

The breeding of people/ animals/ plants that are closely related to each other (first cousins or even closer), thus keeping the genepool weak and leaving them vulnerable to various health problems, mentally and emotionally as well as physically.

Purebred dogs and royalty are notorious for inbreeding; to keep the line "pure" then they are only allowed to procreate with their "own kind", even when offspring are stupid, sickly, deranged, ugly or any number of things.

Carlos II of Spain was the end result of the Spanish Hapsburgs; his parents were uncle and niece and both were highly inbred. Carlos was deformed, retarded, delicate, and had an extended infancy and premature senility. He was married twice, but he was impotent and sex was beyond his abilities.

Plants can be inbred, too; bananas of today are very different from those of three generations ago and often lack the genetic diversity which would keep them healthy.

inbreeding by Lorelili January 17, 2011

increderific 

A term used to describe a cross between incredible and terrific, when neither word can be said to describe someting it becomes the word increderific.

Looks at those shoes man their increderific.

Damn that girl out there, shes increderific.

increderific by Matt Danko May 31, 2006

Inbreed faggot 

Inbreed faggot.... also known as Travis Demler a retarded sloth looking mother fucker who loves the dick and doesn’t ever shut the fuck up!!!

Jeff was joking with Chris and called him a inbreed faggot and out of nowhere a guy popped up and said hi i am Travis demler you called my name

Inbreed faggot by Nayrnamerob November 27, 2019

Inbreed 

To inbreed means to have children with a member of your own family, specifically a blood relative.

This kind of thing happened centuries ago quite commonly to keep royal and high-class blood from branching out to the lower classes of society, and very rarely happens today, as it is frowned upon by...well, everyone.

"My dad forced me to inbreed with my cousin because he didnt want our family's blood going to some street rat."

"Im inbred."
"Lol."

Inbreed by Shadow XII December 28, 2005

inbreeding 

The breeding of two animals who are related to each other.

Brother and a sister

inbreeding by M February 19, 2004

Inbreeding depression 

1.) The lowered overall fitness of a population due to reproduction between closely related individuals, thereby lowering heterozygosity in the population and allowing deleterious alleles to be expressed.

2.) The crushing guilt that follows fucking your sister.

Inbreeding depression is a serious risk in small populations.

Inbreeding depression by SimpHawk September 20, 2018