sister dear

The term used for when someone is completely jealous of their sister or when someone hates their sister.

"Does she send nudes"

"No, sister dear is too perfect for that"

by Ima Dragonfly August 6, 2017

colon sister

When you and a friend are pooping at the same time, but don’t know it.

Ali: I just pooped
Player2: Me too!

Ali: No way! Colon sisters!

by yungshauzzie67 September 19, 2025

WaterChestnut Sisters

The meaning of WaterChestnut Sisters is another term for third sisters. It is when you become a certain age; most normally 10 or before a teenager and you’re guardian tells you that you have a WaterChestnut Sister.

“Oh my god guys, I just found out I have a WaterChestnut Sisters!”

by google.com// October 26, 2020

radiator sister

A woman who is a little rough around the edges but like a radiator in that she radiates or emits light, heat, & sound.

I like her style, she's definitely a radiator sister .

by MoreDirtyHarryThanGirl April 21, 2018

Beat up your sister day

You've always waited for this moment but you never had the occasion, now you do

Oh where are you sisteeeer, its timeeee, today is beat up your sister day

by Martichucho August 7, 2022

Step-Sister

A step-sister is when you get a handjob while behind the wheel of a right-side driving vehicle in ‘Merica!!

I just got my new SUV from London, my girlfriend gave me a ‘step-sister’ the first time I drove it in America!!

by T-town Gibby March 21, 2025

Coopers sister

Thick asf

Coopers sister is thick

by YoungPuss November 5, 2019