Helmet Sisters 

When two women have slept with the same guy, they are helmet sisters. Similar to "eskimo brothers".

Girl 1: I totally slept with Bob last night
Girl 2: OMG no way! I totally slept with him last week!
Both: *high five* We are helmet sisters

Helmet Sisters by Dick Wolves June 22, 2017

Sausage sisters 

The female version of "Eskimo Brothers." When two women have slept with the same man in their past.

Lady One- "You've slept with Jack too?"

Lady Two- "You know that makes us sausage sisters now, right?"

Sausage sisters by Jakungb June 27, 2019

Sperm sisters 

Two women who will pact for life. They will hunt down unsuspecting Sports Figures or Actors and such and initiate a three way. As the man is ready to ejaculate, one lucky lady will savor thus ejaculate in her mouth and when the man is not looking, quickly spit it into her “sperm sisters” vagina in hopes to have his baby! The unsuspecting sucker never knows how it happened but nevertheless is just another victim of the sperm sisters.

You will never again see those sperm sisters swallowing my seed. They will get you for life!

Sperm sisters by DunnBai August 22, 2019

Oscar Mayer Sisters 

When two women have had the same weenie in them they become "Oscar Mayer Sisters."

Ariel's boyfriend broke up with her due to how many Oscar Mayer sisters she has.

Oscar Mayer Sisters by westcoast001 March 3, 2011

mr twittie twister and his sisters 

When sisters get a little bit too twitty with it.

brandon: oh hey baby sis u trynna get twitty wit it
lacie: no fuck off small dick dumb bitch
luke: ILL GET TWITTY WITH U BRANDON
brandon: come here then luke!
luke: Ahh! Ohh! Yumm? ur such a a good twitty tister brandon!
brandon: thnx i know!
lacie: you guys are fucking gay

brand and luke: WE KNOW!
mr twittie twister and his sisters

mr twittie twister and his sisters by mr twittie twister and his sis December 29, 2020

Sistarz 

Similar to the more commonly known words Sister & Sisters.

'Sistarz' is both singular and plural.

There are no known examples of situations where one would have acquired enough or too many sistarz. 'Sistarz' will therefore always refer to the maximum amount of available sisters.

Referring to someones 'Sistarz' indicates a physical attraction. It is therefore not advisable to referring to biological sister(s) using 'Sistarz', unless one wishes to admit to being attracted to one's own sister(s).

Commonly used phrases:

- "Gief sistarz plx! - (I would like the company of your sister(s)).
- "Got sistarz!!!11" - (Do you happen to be in possession of sister(s)?)
- "How old is your sistarz"?
- "That's what your sistarz said."

Sistarz by Cowok January 12, 2010

sistory 

A history that only sisters understand.

That night with Jon is total sistory, only Paris and Nicole will ever know the details!

sistory by HeySuz June 22, 2011