Fool's Sister 

Hot as all hell

Man girl, that chick is as smokin as Fool's sister

Fool's Sister by Quite possbily Mr Canada Eh March 22, 2003

stump sister 

Women, usually with otherwise presentable figures, who have unusually large calves, usually grotesquely so.

She would be fairly good looking if she wasn't such a stump sister!

stump sister by jsaak1 July 24, 2006

eskimo sister in law

A girl that has fucked your eskimo brother but not you

Bro, I was about to get with this chick but she fucked Chad.

Dude, never fuck your eskimo sister in laws. That's almost incest.

eskimo sister in law by Callmedad42 July 22, 2017

Rainbow sister 

I don’t kniw

Be rainbow sister

Rainbow sister by Bfbdndbdhhd January 15, 2018

ur sister a mister 

An insult more powerful than "ur dad lesbian" but not as powerful as "ur granny tranny"

"ur dad lesbian" Jerry said to Leo
"ur sister a mister!" Leo responded
*Jerry dies*

ur sister a mister by Grendman May 14, 2018

Poon Sister 

Alternative to 'sister from another mister'. A close girlfriend that is practically your family i.e. sister. Instead of from a different Mister, you came from the same Mom, or poon.

Friend 1: "I love you guys so much!"

Friend 2: "I'm so glad we're poon sisters!"

Poon Sister by lonerice December 9, 2010

Ur Sister Queer 

Ur sister queer is the ultimate clapback. It shan't be used in ordinary situations, but only in response to "ur pappy trappy". With great power comes great responsibility. Using this extremely powerful phrase could tear the Metaverse apart.

+ Ur gay
- Ur mom gay
+ Ur daddy lesbian
-Ur granny tranny
+ Ur pappy trappy
- Ur sister queer

*The fourth wall is broken and fiction becomes reality. The universe is confined to one single normie meme.*

Ur Sister Queer by Xz1ley March 13, 2018