your sister

The person all your guy friends want to fuck when they realize she isn't just yur little sister any more- she's your little virgin sister who is hot now that she has boobs and shaves her legs.

"Damn! Your sister is hot! When did that happen!?!?"
"Dude as your best friend, would it be weird if I fucked your sister?"

by Sexy Stephy June 6, 2004

Your sister

Its a more recent variation of 'your mom'. is often used to insult somebody with or without a sister. used more often now as your mom is becoming out dated. (still only used by douche bags)

first guy: i heard a noise last night what were you doing?
Douche bag: your sister
surrounding audience: OOOOOOOHHHHHHH!
random guy: i like turtles
2nd douche bag: i like your sister
. . .

by turtles are big March 1, 2011

your sister

One hot piece of ass. Penises can be found in her mouth, pussy, and ass.

Damn, your sister is hot!

by Crackalac July 1, 2003

Your sister

Someone doing ur sister

Billy: what are you doing?
Nate: your sister

by Welcum May 30, 2018

not your sister

a gorgeous woman who you have so much in common and love so much that she could be your sister

sarita is sooo crazy sexy cool im glad shes not your sister so you can have relations

by j-z August 9, 2012

your sister

another name for a person who you "realy like" and want to tell joke about without her knowing...

look how much your sister is eating...

by babag March 31, 2005

Your sister

An absolute bitch that slaps you in your gob every time she sees you.

Shouts about her friends and her boyfriend

Friend:Your sister just kissed your boyfriend!!!
Me: what a bastard!

by DarkAngel1 May 11, 2019