blood sisters

two lesbians having sexual intercourse while both on their menstrual cycle.

The two blood sisters better not stain my sheets!

by Agent Filth and Little Bill November 7, 2010

sandwich sisters

n. A gay male couple one reguarly has threesomes with.

"I'm going 'round to my sandwich sisters' tonight for a bit of action."

by Chris Kirk April 13, 2005

Lick'em sisters

Lesbians... says it all.

Melissa Etheridge and Rosie O' Donnell are "lick'em sisters".....

by SW Florida SB April 19, 2004

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

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

lipstick sisters

Girls who have been with the same man at different times

Did you know that Jill and Sara arelipstick sisters they both slept with Kevin.

by Video vixen November 27, 2015

Sisterstatistics

Branch of "mathematics" superficially resembling Statistics. Does not actually involve logic and often is based on wishful thinking. Exclusively used by people unskilled at math. The "Law of Averages" is a major component.

Using sisterstatistics the bum convinced himself that since he has bought so many lottery tickets, he is due for some winnings.

by AbnormalBoy July 31, 2004