Sister bonding

The act where two sisters, typically twins, avoid all altercations with their friends in order to spend quality time together.

Friend: "Hey, do you twins want to hang out"
Sister1: "Sorry we can't"
Sister2: "Yeah, go away. We need to go Sister Bonding"

by Baes rocker May 31, 2016

Sister Twins

Friends who are sisters, but more. They are alike in almost every way! They don't have to necessarily look alike.

Chloe and Erin are sister twins!

by meyoutwinning July 14, 2015

SWAGGY SISTERS

Swaggy sisters: a group of teenage losers that aspire to have swag.

Oh goodness, I wish I had as much SWAGGY SISTERS as Sydney did 🤠😢

by Notmyrodrickk November 28, 2018

shlop sisters

two girls who gave the same boy head

julia: omg u gave ____ head?
sab: omg yes u too??
julia: yes!! shlop sisters!!!

by midati June 4, 2020

Sister Moon

She is a character from the show Adventure Time and is first introduced in the mini-series "Stakes". The Moon, also called Sister Moon, is one of the 5 vampire's in the Vampire king's court.

To put it simply, she is the best vampire to ever exist in the world of monsters in all universes. Even Lady Dimitrescu's got nothing on her. Maybe. I'm not sure.

Sister moon.
"Die like pigs!"

by SuspiciouslySweetSubstance July 7, 2021

Sister Vibes

When you see a beautiful women (typically blonde) or something wholesome and fashionable in regards to being sexually attracted to your sister.

Blonde girls give me sister vibes

by anonymous August 18, 2021

plastic sister

A relationship that appears to be in harmony on the surface, yet in fact both people hate each other or trying to compete with another in secret. Plastic sisters get jealous of each other yet maintain a formal smile all the time. Not particularly girls.

Look, A and B are obviously plastic sisters.
Why are they still together, A’s bf cheated on her with B?
That’s literally what plastic sisters mean.

by PG One May 31, 2018