Sister Ex 

Your ex's ex with whom you have become friends. The friendship starts out as a trauma bond, swapping stories and comparing notes on the dude's lies, cheating, and manipulative behavior, and evolves into a genuine sisterhood.

I'm getting together with my Sister Ex on his birthday to wish him a year of pain and misery.

My sister ex confirmed he was cheating on her with me when we met.

Sister Ex by ElJanel November 6, 2023

my sister ext 

A video of a woman with an ultra-realistic face mask on, most likely to test out how it looks on her. This video is considered eerie and uncanny by most people, but only because of the realism of the mask she wears. It is nothing outright terrifying (No gore, no disfiguration, etc.)

Hey, I just watched my sister ext. Isn’t the mask she wears pretty interesting?
My sister ext is honestly pretty scary, even though it’s just a video of a woman wearing a realistic mask.

my sister ext by Wafou! May 31, 2022

Sister Exposed 

When a person is exposed with all his lies. (Usually with enough evidence)
This was from internet slang culture followed after James Charles.

-Yo, she has broken up with him.
-why?
-Someone has sent her Screenshots of his and flings's convo.
-Oof, Sister EXPOSED

Sister Exposed by LOLsInChinese December 14, 2019

EXO Luhan younger sister and eldest sister? Nugu? 

'Look I have found three piece younger sister to upload inside the internet and Kris Wu is useless!'

'Bye bye'

EXO Luhan younger sister and eldest sister? Nugu?

EXO Luhan younger sister and eldest sister? Nugu? by syafinaz100 January 8, 2024

Co-existing Sisters 

This is when your parents make you and your sister, step sister, or half sister get along, but you both hate each other. So you make an agreement that you are going to co-exist, and you call your relationship coexisting, or 'co-existing sisters'!

Lena: I hate you and you hate me, and I don't want to deal with you when I get home from practice and school.

Kate: I hate you, too, and I don't want to be your sister.

Lena: Good, then we are co-existing sisters, because we have to behave but we don't want to be sisters.

Kate: Great! Goodnight, co-existing sister

Lena: Goodnight asshole.

Co-existing Sisters by Dilligaf ismdiabod August 28, 2019

the extraordinaryly normal sisters 

Amanda Lucia and Riley Annette
-saving lives one douche bag at a time!

-WOAH! that guy is such a jerk!
-Yeah, the extraordinaryly normal sisters need to get ahold of him!

the extraordinaryly normal sisters by Amarri Skye May 29, 2010