Date Rosy Palm and her five sisters 

to masturbate, specifically males.

Dude, did you date Rosy Palm and her five sisters last night?

Date Rosy Palm and her five sisters by Derek M. May 16, 2006

sisthren 

refering to a female in a positive manner.
mainly used by rasta

jah bless mah brethren n sisthren

sisthren by KennyG January 11, 2008

bank sitter 

Commonly used term in the game "Ultima Online" for one who camps or sits at banks (especially Brit Bank West) to do nothing besides show off what they are wearing and/or weapons and items they have equiped. Tend to go AFK for long periods of time doing nothing ingame but remain in place.

The majority of bank sitters are tamers.

Look at how many God Damn bank sitters there are.

bank sitter by Swizzle August 8, 2003

Moon Sisters 

Girls who have periods at the same time.

Girl 1: Omg i have my period right now
Girl 2: Omg me too! Moon sisters <3

Moon Sisters by jtz February 21, 2013

Sisters of Mercy 

Best band ever, and just because they helped define a genre, doesn't mean that listening to them makes you a poseur.

As in: The Sisters of Mercy are THE BEST BAND EVER, and I listen because they're GOOD, not because I want people to think I'm tragically goth.

Sisters of Mercy by somgoth June 24, 2008

sistard 

a sister that sometimes acts like a retard

"My sistard here just chugged sixteen beers and she wants to drive us home:

sistard by Lindsay Duff August 6, 2007

workplace trash sifters 

Those folks you notice who always stay late who are doing so in order to be able to privately examine the contents of colleagues’ trashcans to gather intel.

Those creepy workplace trash sifters sometimes strike stark terror into me to the point where I can’t sleep!

workplace trash sifters by Dr Bunnygirl October 5, 2019