Ur sister is a mister 

The insult searched for in the depths of Volcanos, anytime this is used an alien race is wiped from existence

1: ur mom gay
2: ur dad lesbian
1: ur granny tranny
2:ur grandpap a trap
1: ur sister is a mister
*zarblorgs fuckin die*

Ur sister is a mister by Penis 10 inch haver March 14, 2018

unbiological sister 

Your best friend in the whole entire world!!!! You love each other like a sister. You guys have like the same exact personality and have so many inside jokes! Your just like twins. You think the same things, do the same things and love the same things! No one can replace them and everyone knows that you guys are best friends! (Unbiological sisters)! 😋 They are your only chickadee!

Hannah= my unbiological sister! Chickadees forever!!! 🐣🐥😘

unbiological sister by Soallen02🐣 December 21, 2013

Cum sister 

A girl you call one of your own because you both have fucked the same guy.

"Hey, I had sex with mike before you did!"
"I know! Love you cum sister!"

Cum sister by tooflirty22 December 12, 2009

Your Sister a Mister

Only used by the almighty, worse then your mom gay and everything else

Caleb:Your mom gay
Kyle:Your dad a lesbian

Caleb:Your granny tranny
Kyle:Your gramp tramp
Caleb:I'm sorry but you have insulted my to my boiling point and now I'm afraid I have to use a forbidden phrase upon you
Kyle:Do it pussy
Caleb:Your sister a mister
Kyle:Just fucking melts

Your Sister a Mister by NippleringBitch March 15, 2018

billet sister 

Canadian term for the daughter of the family a young hockey player lives (billets) with, generally around the same age as players.

Hey Lapointe, your billet sister is a rocket!

billet sister by TheSweetie February 20, 2019

my sister sucks 

your sister is not cool, is rude, and makes you want to kill yourself

my sister sucks. i want to leave

my sister sucks by charly6187 November 20, 2016

Wyatt’s Sister 

The sexiest woman to ever exist on earth worshiped by all long distance runners. Her disciples know 3 things about her:
1. She is blond
2. She shares Wyatt’s parents

3. She is delicious

Wyatt: I had a big test today.
Distance Runner: do you know what else is big?

Wyatt: What

Distance Runner: what I put into Wyatt’s Sister
Wyatt: i hate you

Wyatt’s Sister by TayloristMissionary March 16, 2022