Your sister 

Someone doing ur sister

Billy: what are you doing?
Nate: your sister

Your sister by Welcum May 30, 2018

faggot sister 

A highly offesive term used to describe your lesbian sister who hooks up with all the hot chicks you were trying slam. This is not your favorite sibling. Fucks with one's pride.

You think that the hot bicurious chick at the party would be a fun hook-up. Then your aggressive faggot sister intercepts and fucks it up for you.

faggot sister by [e-mail] May 14, 2009

alien psycho sister 

Any extraterrestrial, most likely with some level of insanity and/or psychotic tendencies, that poses as the sister of any legitimate human. May emit, at any volume, the following: doggy voice, shrill sounds, nonsensical words, sudden shouts, low hissing sounds, extremely bad whistling, or other bizarre noises.

"Why is my little sister so annoying?" "She's probably an alien psycho sister."

alien psycho sister by Cameo March 31, 2005

Bring Your Sister 

Former Presidnet Clinton's catchphrase. See also bring em on

Bring Your Sister by ZaiMatarese August 22, 2003

Twisted Sister 

Twist the middle finger of your right hand over the index or pointer finger of your right hand as if you were crossing your fingers for good luck. Lick the tip of your pointer finger. Place the end of your pointer finger against a woman's rectum. Push firmly and corkscrew or twist your fingers counterclockwise to lock them into her anus. To guarantee proper technique, you must push your fingers all the way in to the knuckle. Use the pinky from the same hand to reach up and tickle her clit.

She received a Twisted Sister for not swallowing like a good girl.

Twisted Sister by Jomama a.k.a. Joey Crack May 15, 2009

like a sister 

What a guy calls you when he likes you and doesn't want you to know or doesn't want to date and ruin your friendship.

Your just like a sister to me.

like a sister by FantasticC July 10, 2016

my little sister 

someone who annoys you, loves you and is always there even when you don't particularly need her

she spilled orange juice over my new shirt, yea that's my little sister.

my little sister by dr. gerbil January 4, 2017