half-co-sister-in-law

Spouse's half-sibling's wife.

half-co-sister-in-law.

by Simaduria July 27, 2024

sister-husbands

Sister-Husbands
Pronunciation: SISS-ter-huz-bundz

Noun

A pair of people so mentally and emotionally in sync that they finish each other’s thoughts without even trying, yet still manage to fuck each other properly over time.

“Those two debate would skip coffee and then argue about pineapple on pizza while having sex on a public beach—they’re total sister-husbands.”

by bestbethedefinition October 3, 2025

Burch sisters

When you can get with not only one but two girls and they are trashy sisters.

Where were you last night? Dude I was getting with the burch sisters.

by Snakesnake February 7, 2017

courtesy sister

A friend(no 'benefits') who's so close she's like a sister, or just is the mother of someone who calls you Uncle. (could be a former sexual partner, but who is only a friend now)

How many siblings do you have?

Well, I have 2 brothers, 2 sisters from my mom, & a half brother from my dad, & a courtesy sister I stilll keep in touch with.

by cyberpope67,BC,Canada May 2, 2021

Sodium Sister

A female who is being used ONLY due to one thing they have/provide

John: He Mark, do you have some gum?
Mark: No, but I’ll see if our Sodium Sister has some.

by Big Zucc May 25, 2018

KRIS WU YOUNGER SISTER

KRIS WU YOUNGER SISTER

KRIS WU YOUNGER SISTER

by jnin August 27, 2024

The Sinful Sisters

The Sinful Sisters, is my joke, on the famous, The Righteous Brothers. They are The Righteous Brothers' biggest rival.

The Sinful Sisters, are a bunch of women, who do horrible stuff, like chaining up, The Righteous Brothers' "Unchained Melody." A joke! Will The Righteous Brothers, free the melody again? Another joke!

by I'mcrazy April 17, 2025