menstrual sister

one of two (or more) women who happen to fall on the same menstrual cycle. Menstrual sisters often times find comfort in sulking, eating, complaining, and causing a scene together.

My menstrual sister, from the stall next to mine, threw a tampon at me as I kicked my door in anger.

As a good menstrual sister, I shared my chocolate as we bled and weeped together.

by PrincessGaylordFocker December 11, 2016

Spear Sisters

Refers to two women who have slept with the same man.

Woman 1: how'd you score those free drinks?
Woman 2: the bartender and I are spear sisters.

by Picklesandbacon June 13, 2015

Sister Slammer

When you and bro have sex with a set of sisters.

Mark- Mikey, you fucked Cheri, right

Alex- {Hell} yeah I did.
Mark- Good, I fucked her sister. Put it here my sister slammer.

by H7476 October 28, 2017

john's sister

A female known as being extremely attractive

Damn is that john's sister? She be looking fine...

by LeekArie February 16, 2020

Sister Katie

An annoying hawt BFF girl names Katie who likes being addressed like a nun.

Girl 1: Hey look it’s sister Katie

Girl 2: Omg I knew a sister Barbra back in the 30s.
Girl 1: yea she’s weird and stupid and annoying but gorgeous.

Girl 2: I wish we could all be like sister Katie. Also have you seen her bestie?
Girl 1: Omg!! Who I thought she was lonely and had no friends. Because she acts like a nun.

Girl 2: Her name is Sister Audrey.

Girl 1: Omg I thought Sister Audrey was only a legend, but she is real and hawt.

by Sister69 July 16, 2021

italian sister

When you receive a blowjob from a dude in the dark with a mustache but it doesn't count as being gay because you cannot see it.

Last night I got an Italian sister from Frank.

by The real White Fury October 9, 2017

Sister cowgirl

A great girl who likes to wear hoops and work at the farm, milk her cows, watch Barcelona play, likes Messi and sister James, is VERY allergic to peanuts she is very attractive and has a lot of friends like: daddy long legs, unfaithful sister, and daddy red head

Person 1: “hey look at that girl, love a cute sister”
Person 2: “yep that must be sister cowgirl

by sistercowgirl May 25, 2018