Belly Cousin

Male friend who have had sex with the same female. Similar to "tunnel buddy"

Mike: I had sex with Alyssa last night.

Jon: Oh, shit! I used to hit that also! We're belly cousins!

Both: *high five

by Flyboy87124 October 29, 2020

Cousin Squared

When you have a cousin related on both sides of your family.
When a set of siblings marry another set of siblings - both marriages have children and they are cousins squared.
Aka cousin to the power of 2.

Can’t wait to go out tomorrow with my cousin squared.

by Cousin^2 November 16, 2019

tenth-cousin-2X-removed

Tenth-cousin-twice-removed (10C2R).

My tenth-cousin-2X-removed is a good person.

by N8953SW June 26, 2021

the italian cousin

When having sex in a college dorm, right before the man finishes, he pulls out and skeets on the roommate whether she is sleeping or not.

Janet's room is so small that I can try the Italian cousin on barb.

by SHEEPSKILL December 3, 2017

second-cousin-twice-removed-in-law

1- Second-cousin-twice-removed's spouse.
2- Spouse's second-cousin-twice-removed.

My second-cousin-twice-removed-in-law is a good person.

by JAMP12 September 21, 2021

great-great-great-cousin-uncle

Great-great-grandparent's male first cousin.

My great-great-great-cousin-uncle is a good person.

by Gtopql November 23, 2019

half-cousin

1- Half-pibling's child / Parent's half-nibling.
2- Person who, in relation to the other person, has zero parents and one grandparent in common.
3- Half-first-cousin.
4- Half-1C.

My half-cousin is a good person.

by Peter12369 October 21, 2021