Sisternal 

When a female sibling, normally a big sister, develops maternal and/or protective feelings toward their sibling/s.

Tina has Sisternal Instincts towards her two younger siblings.

Sisternal by DiamondPaint27 October 18, 2022

Subternal 

A lifestyle and state of mind in which the institutions of our society lose their meaning, and people lose their Ego's. Living lives of love, peace and harmony with others and nature. Those who live the Subternal lifestyle realize how menial and harmful to humanity the institutions we've built are and work on becoming selfless. They realize it's time for a change and are committed to bringing it

whenever I see the greed, inequality, and racism in our world, I feel Subternal pulsing through my veins

Subternal by Ritaskeeter April 26, 2015

sexternal hard drive 

An external hard drive that is used solely for porn.

Johnny: Hey man, my computer crashed and I lost all my porn. Do you have any that I can borrow?

Cash: Yeah buddy, I'll hook you up with my sexternal hard drive. It's got about 60 hours of goods on it.

sexternal hard drive by Champcar November 27, 2011

Sistermance 

The female equivalent of bromance. Love and affection shared by two straight females.

Not to be confused with shoujo-ai, yuri, or femslash.

Jamie: "Have you seen Firefly? Kaylee and Inara have the cutest sistermance."
Sam: "Agreed! Mal and Wash's bromance is awesome, too."

Sistermance by Skydive Off Isengard August 11, 2014

sisterholic 

Sisters or brothers and sisters who totally enjoy their love for each other and the memories they create and share.

Secrets of The Sisterholic Cult Imma Sisterholic My Sister is a Funny-Faced Sisterholic

sisterholic by A Cheese Danish Called Hamlet December 5, 2009

sisterariola 

a guy on twitter known for being famous and tasteless, many remember him from the one time ariana grande liked his reply and when he was in a mario cart ad, and “slap that ass richard”

guy 1: did u see him over there? so tasteless
guy 2: yea so sisterariola

sisterariola by yeojinl0ml October 10, 2020

Sisterianlol 

A tall giraffe-like human that lives with its beloved pet rat dog and worships Taylor Swift

OH SHOOT! I just saw a sisterianlol in the hallway, it’s long ass neck scared the shit out of me!

Sisterianlol by Meggersthelittest September 30, 2021