first step-cousin-nibling

1. The grandchild of one's parent's stepsibling.
2. The stepgrandchild of one's parent's sibling.
3. The grandchild of one's stepparent's sibling.

My first step-cousin-nibling is a good person.

by Elivaldeq November 24, 2019

Cousin squared

Auntie Alpha and Uncle 1 have child ABC

ABC is your cousin
123 is the opposite family cousin

You have no direct relation to 123 beside being your cousin cousin
123 is a cousin squared

What do you call your cousin's cousin?

Cousin squared

by Condescending Loser April 17, 2024

15.5-tuple-fourth-cousin

15.5-tuple-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and thirty-one great-great-great-grandparents in common.

My 15.5-tuple-fourth-cousin is a good person.

by ABGR June 9, 2021

flu cousin

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.

by Quantum Ranger September 20, 2015

My cousin is here

When a girl says"My cousin is here", she means she has got her period.

Judy: Hey, Claire. Wanna go swimming with me?
Claire: Aww, I can't. My cousin is here. Another"shark week" again, you know.
Judy: Oh, bummer!

by Sussie Q April 23, 2024

undecuple-fourth-cousin

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

Cousins

Slang used by Sailor Moon fans as a humorous euphemism for sapphic couples. Refers to Cloverway's English language localization of the original 1992 anime, wherein prominent lesbian lovers Sailor Uranus and Sailor Neptune were changed to being cousins due to censorship laws of the time

Lily met this girl last year on a Sailor Moon Discord server, and now they're cousins

by Mamoru Chiba April 22, 2025