1- Child of parent’s full sister and of other parent’s full brother at the same time.
2- Child of paternal aunt (father's sister) and of maternal uncle (mother's brother) at the same time.
3- Child of maternal aunt (mother's sister) and of paternal uncle (father's brother) at the same time.
4- Nibling (biological) of mother and of father at the same time.
5- Two parents's nibling.
6- Person who, in relation to the other person, has zero parents and four grandparents in common.
7- Double-cousin.
8- Double-1C.
2- Child of paternal aunt (father's sister) and of maternal uncle (mother's brother) at the same time.
3- Child of maternal aunt (mother's sister) and of paternal uncle (father's brother) at the same time.
4- Nibling (biological) of mother and of father at the same time.
5- Two parents's nibling.
6- Person who, in relation to the other person, has zero parents and four grandparents in common.
7- Double-cousin.
8- Double-1C.
My double-first-cousin is a good person.
by Peter12369 October 21, 2021

Second cousin's great-grandson.
by Gtopql November 23, 2019

by WHATTHEFA April 21, 2023

Someone who bangs their cousin and potentially loves them and eventually has inbred children. Has no care in the world If the children come out severely imbred
by Mackmama_8 March 28, 2025

A partner with whom you have not had intercourse with yet, but have enjoyed grinding bare pubic regions with.
by Minotourettes December 14, 2016

12.5-tuple-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and twenty-five great-great-great-grandparents in common.
My 12.5-tuple-fourth-cousin is a good person.
by ABGR June 9, 2021

My sesqui-first cousin-uncle is a good person.
by Hgcloziw November 23, 2019
