Blood sisters

The special ritual of 2 or more close girl friends that become so close that their menstrual cycles syncronise. Once this stage is complete the girls become blood sisters by sissoring each other and exchanging their monthly discharge

Amanda: Hey Helen we've become so close over the last few months that I think we should become blood sisters.
Helen: That sounds amazing I'm due on in a few days
Amanda: Me too!

by DonBay May 2, 2019

sistergirl

Sister Girl, a word for transgender Aboriginal Australians.

"Sistergirl, Aunty was looking for you!"

by kikuhonda December 28, 2015

Eskimo Sisters

Two or more women who have performed fellatio on the same man (not necessarily at the same time) and swallowed his cum.

"You sucked Robbie off too? Now we're Eskimo Sisters!"

Can also be used in the context of the man referring to the women as his Eskimo Sisters:

"Hey, those girls at the bar are cool--let's join them"
"How do you know them?"
"They're my Eskimo Sisters."
"Nice!"

by JacksonDollup October 4, 2013

Sister Sally

The act of tucking your penis and nuts between your legs and holding your legs together tightly to look like an ugly vagina (just like your sister Sally). Otherwise known as the Buffalo Bill. This maneuver is usually followed up by spinning around and bending over to produce the fruit basket.

My bitch girlfriend left me on the side of the road in Gaysville, so I had to sister Sally to get a ride. It's ok though because I got to show my fruit basket when I got in the truck.

by UncleChester September 9, 2011

not my sister

a gorgeous woman who you have so much in common and love so much that she could be your sister

sarita is sooo crazy sexy cool im glad shes not my sister so we can have relations

by j-z August 9, 2012

sister

you want to jump her bones (in some cases, you do) but you call her your "sister" so people don't get suspicious.

"Oh no man, I just love her like a sister."

by irtw.lgkte,jcl;dsgxhndwq September 5, 2011

Preach it sister

A saying used when someone is ranting about something comparing their rant with a gospel preacher.
It can be a good or a bad rant, but the use of "Preach it sister" is often ironic.

Girl 1: I need feminism because rape.....
Guy 1: Preach it sister!

Guy 2: Xbox One is far superior to Playstation 4, its CPU...

Guy 3: Preach it sister!

by Mooseslayer June 13, 2014