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

safety sister

A sister whomst you trust with your safety at all times, especially at like a frat event.

"Hey my homie, need a safety sister for tonights super dope frat event?"
"What's a safety sister?"
"I dunno man, ask Trent."

by anonymous November 14, 2021

Sister Lover

Conroy: Beatus sure does love his sister in a sexual way!
Edwin: He sure does! She’s all he thinks about!

Get the fuck away from me Beatus, your a sister lover.

by GodOfAssEater69420 October 22, 2020

Sisters underwear

Me: What’s up man?
David: I’m good
Me: Same and I’m wearing my sisters underwear
David: Why?
Me: I need it so I can pleasure myself
David: Oh, so can I see them now?
Me: Silk and fancy
David: So smooth
Me: Sisters underwear feels so go, pleasuring time

I wear my sisters underwear

by Cultistmania June 10, 2023

Big Sister

A big sister is a little sister that has grown up, and is no longer capable of collecting Adam from corpses. They are in a deep sea diver suit, just like a Big Daddy. They are able to use Plasmids, and have a large needle to take Adam and transfer it into themselves.

Eleanor: If I can survive, I’ll need to become like you. I’ll need to become a big sister.

by n_u_m_l_o_k September 29, 2020

Fireman Sister

When two women have had sex with the same guy. Akin to the not-so-great male term “Eskimo brother.” So named this because the two women have both “slid down the same pole.” This act brings about a specially bonded type of sisterhood.

Jess: I got way too wasted and somehow hooked up with Brian last night.

Sarah: Ew gross. He’s horrible in bed but now we’re Fireman Sisters since I hooked up with him last year. Cool!

by Jam Sandwitcher July 21, 2022

Ringworm Sisters

A derogatory term for women of less than desirable sexual cleanliness.

Used by groups of broskis - "Dude, ringworm sisters at 9 o'clock"

by Marty McBroseph June 29, 2011