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

1- Great-great-great-grandparent's sibling's great-great-grandchild / Parent's fourth-cousin.
2- Great-great-grandparent's sibling's great-great-great-grandchild / Fourth-cousin's child.
2- Great-great-grandparent's sibling's great-great-great-grandchild / Fourth-cousin's child.
My fourth-cousin-once-removed is a good person.
by ZJO8738 October 3, 2021

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

Second-cousin-five-times-removed (2C5R).
My second-cousin-5X-removed is a good person.
by N8953SW June 26, 2021

When you and another guy get cheated on by the same girl but both of you already fucked her and you both have her AIDS.
Guy One:Dude,I can't believe she used us like that,and now I have AIDS from her.
Guy Two:Bro I got AIDS from her too!
Guy One:Holy moly that makes us flu cousins.
Guy Two:Man let's go somewhere to eat,my treat.
Guy Two:Bro I got AIDS from her too!
Guy One:Holy moly that makes us flu cousins.
Guy Two:Man let's go somewhere to eat,my treat.
by Quantum Ranger September 20, 2015

Spouse's second-cousin's spouse.
My co-second-cousin-in-law is a good person.
by JAMP12 September 21, 2021

Half-first-cousin.
by Zabombini October 5, 2024
