Soul sister 

Best friend who is closer than a sister, and no matter how long you are apart, when your paths cross again it's like you didn't miss a beat: you're just as close and continue right where you left off.

People always ask us if we're sisters. We say, "No. We're soul sisters!

Soul sister by MarkMyWords. January 4, 2021

Mr. Sister Woman's Sister 

Also known as Caroline, but commonly known as Mr. Sister Woman's Sister, The assistant manager of the Mr. Sister woman Religion (advises Mr. Sister Woman on who should or should not be in the Mr. Sister Woman Religion, etc.) (Mr. Sister Woman being the superior being to all living things on earth) Mr. Sister Woman's sister is generally a very fun and energetic person. Could be considered the second most superior human on earth.

Mr. Sister Woman's Sister rejected Pierce into the Mr. Sister Woman Religion!

Mr. Sister Woman's Sister by Chickindude June 20, 2021

Ur sister 

that cute bitch i be fucking

Person A: hey man what are you doing?
Person B: ur sister, bitch

Ur sister by LilBoiDicaprio November 22, 2019

Yer Sister

Phrase originating from an urban area to reply with disrespect or to have a reply to being dissed when you can think of nothing else to say.

Joe: You smell like a cabbage truck today, did you even take a damn shower?
Bruce: Yer Sister!

Yer Sister by LTChaos January 21, 2022

Oprah's Sister 

When something unexpected happens.

The end of the Sixth Sense was a total "Oprah's Sister"

Oprah's Sister by BixiBite January 25, 2011

National Fuck Your Freinds Sister Day 

On April 21st of every year National Fuck Your Freinds Sister Day starts on this day you boy or girl will go to one of your friends houses and they are obligated to consent to having you fuck their brians out so in turn on this day woman's right to choose is also temporarly suspended

Josh texts carl: yo its National Fuck Your Freinds Sister Day im coming over to fuck your sister
Carl: Go ahead im about to Fuck Yours
Josh: Narly dude

National Fuck Your Freinds Sister Day by DizzyCannon7211 April 19, 2020

Smile sweet sister sadistic surprise service 

The intro to an anime called blend s. If you want to know if someone is an anime fan just say smile sweet sister sadistic surprise service and if they dont respond with something else beginning with s like sono chi no sadame, sasageyo or cyaka blyat their heads will explode

Girl one: smile!

Girl two:sweet!
Girl three: sister!
Girl four:sadistic!
Guy one:surprise!
Guy two and three:service!!
Every closet anime fan: *nervously sweats* my ultimate weakness. Smile sweet sister sadistic surprise service.......... 'smoke week every day'

Smile sweet sister sadistic surprise service by RobinEmma February 19, 2021