Two females who are either currently sleeping with the same man or have slept with the same man in the past
by Nobody’s bitch September 28, 2018
When you put your dick in your girls ass, and proceed to spin her like a helicopter blade. Doesn't have to be your sister, but it can be. Works best with small girls as they are easier to spin.
by BigOlBeanBoy June 15, 2018
Two baby mamas who share the same baby daddy. The baby mamas are friends and have good relationships with all their children and each other's families, without the baby daddy.
My baby daddy gets jealous that his two ex's get along and have become Sister Mamas, who act like positive loving adults for the sake of their children.
by MissWallace February 26, 2014
Wife to hubby: Honey, why are you so tired tonight. Hubby: Sweetheart, I was withthe five siters this afternoon, at the office men's room.
by Buster Stronghart December 02, 2003
women who has sexual intercourse with other women in the shape of two sissors cutting at each other.
by c!rclec!rcled0td0t February 05, 2010
Government surveillance efforts that utilize surrepitious methods and deny any involvement because they lack the testicular fortitude to defend their own actions.
"Red light cameras are classic Big Brother, but NSA scanning of Google Earth footage is totally Big Sister."
by RandalPnk October 02, 2007
When more then two girls have that special present from mother nature called the period on the same day and share the cramps and the mood swings together.
by Alex Haaaas March 09, 2009