Vagina Cousins 

When two women have sex with the same male, they both shared the same penis, therefore are vagina cousins.

Oh yeah i remember those two, those were the vagina cousins that Tim hooked up with.

Vagina Cousins by beastside November 30, 2009

identical cousins 

Two people who act like enemies and say they're nothing alike, while in reality are best friends and practically the same person.

"Oh my god, can you believe that Lenny and Ruth haven't killed each other yet? They must really hate each other!"

"Dude, are you dense? They're identical cousins....they get together on Saturday nights and sew every week. They're basically best friends."

identical cousins by george.wa October 14, 2014

clam cousins 

When two women have had sex with the same man/men, they become clam cousins. This is a bond that can never be broken...unless they get jealous.

Variation: instant clam cousins - the resulting relationship due to a menage a trois.

"You see those two chicks over there? They're instant clam cousins. You know what that means? Oh yeah dog! Threeway!"

"My best friend Jullie and I just found out we're clam cousins!"

clam cousins by monkeyboy72 November 14, 2009

soccer cousins 

Two females or males whom have had relations with the same male, I.e. they have played with the same set of balls, making them "related"

Brad: "I totally made Jill and Christie soccer cousins last night, deez nuts have been real popular lately!"

soccer cousins by Skyyblueplaya December 6, 2015

Cousinship 

Considered to be a holy term to reveal the truth from your cousin.

Over time the use of cousinship has developed into other 'ships', such as 'siblingship' and 'friendship' to name a few.

Cam - Bro i fucked cindy!!
Mitch - aye mean, cousinship??
Cam - nah i had a beat instead

Cousinship by cousinship bro October 20, 2010

DeMarcus Cousins 

The most loyal NBA player of all time, who never took the easy way out, and always respected his teammates.

Man, I love Demarcus Cousins

DeMarcus Cousins by Yeeet77 July 7, 2018

I saw the cosine 

"I saw the sign" for trigonometry geeks.

I saw the cosine, and it opened up my eyes, I saw the cosine.

I saw the cosine by KEMMA SLAY June 26, 2016