sister penis

something that Sekretsu can't find out what it means.

"No, I'm not going to hentai.org to find out what sister penis is."

by Iking01 March 27, 2015

sister

A girl who is very close to you. A girl who understands you like no one else can, and who can also relate to you. A girl who you are very close with, no matter what happens. A girl who you love, and she loves you back.

Kara and I are not actually related, but she is still my sister.

by Røbínsøn August 8, 2016

Line Sister

your sister who stands in LINE with you while pledging,not chilling in a classroom.

whos tha girl you were talking to?
oh thats gia my LINE SISTER, we put in work for our letters
ohhh okk!!!i see you!

by macademianut215 September 20, 2012

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

sister dick

a. positive - when the one girl is the cool girl among the group of guys.

OR

b. negative - when the one girl is the annoying girl like during a sports game.

** always - a girlfriend you would never fuck

shut up and watch the game, stop being such a sister dick

by purplepalace October 15, 2011

Elastic Sisters

Noun. The name of a group of women who have had sex with a common man.

The female equivalent of Eskimo Brothers.

Suzie: "You had sex with John? Me too!"

Mary: "Elastic Sisters!"

by TallZack July 29, 2011